Mikaela

Mikaela (ミカエラ) is a character referred to in Seraph of the End. The physical body of Mikaela himself was kept during the dark ages of Greece. There were candidates believed to have the Michaela trait. While Mikaela is seen deceased, he is Sika Madu's son and heavily involved in his long-term plan to be resurrected. In the prehistoric past, memories show that Mikaela was alive. Among a seraph civilisation, Mikaela was present when the Tower of Babel was established.

Appearance
The Mikaela seen in the past was stated to be deceased but was well preserved and appeared like an adolescent. He had long wavy, light colored hair nearing his shoulders, and pointed vampire-like ears. Most prominently were four large feathered seraph wings on his back. He bears a remarkably similar appearance to Mikaela Hyakuya as a child.

With Yu seeing a glimpse of Mikaela's face, he was under the impression that he was a pretty girl but with Mikaela having no clothes on, Noya referred to Mikaela as 'him'. When Yu mentions that Mikaela could be a princess to be rescued, Sika Madu remarks neither he or Mikaela have a gender like humans. While he cannot say whether or not Mikaela can become a proper "princess" when Yu refers to him as that, Sika Madu still uses 'he' when referring to Mikaela in conversation.

In terms of the being Mikaela may be, his father Shikama Doji is seen to have blue blood. From what Guren feels he knows, the price to resurrect the First's son would be the same as what it takes to bring back all of humanity. Seven sinful keys, and the lives of every last vampire appears to be what is required to restore what Mikaela is. Fabric based clothing was worn when Mikaela was alive before recorded history when dinosaurs were the dominant species on the planet, long before humans had even evolved. A light colored shoulder cape reached down to his hands. This was worn over a tunic-like piece of clothing where the bottom went down to his knees. Underneath, Mikaela wore shorts and sandal based footwear. It transpires that Mikaela had blond colored hair and bright blue eyes.

Personality
Supposedly, Mikaela has been speaking to Yu and he is described as super nice. Seen to be happy when he was alive, Mikaela enjoyed child-like games such as hide and seek with a shadowy like orb being he was friendly with. In response to his father calling, Mikaela returned right away with the shadow entity resting on his shoulder. Thoughtful, Mikaela has acquired ice cream which he transported quite the distance meaning to share it with his father. Having named his homunculus, Mikaela considered it sad to not do so.

"Yep! It's just so sad if they don't have a name!"

- Delighted to confirm he has given a homunculus a name.

Upon hearing that he was cursed, Mikaela laughed at what he received as a joke. The rare time his cheerful disposition was changed was at the idea that his father did not really love him. At hearing Sika Madu say that he did love him, Mikaela was enthused and promptly handed over some ice cream as he returns to his joyful self. Experiencing illness, Mikaela attempts to state it was not because he went outside.

"I'm sorry. But... ...It wasn't because of the soft serve."

- Having fallen ill but not wanting the ice cream to be seen as the reason.

Although upset at the idea of being taken to a cleansing room, Mikaela was persuaded to do so after hearing he and Sika Madu could go out for ice cream together. Also elated at the idea of heading out for a picnic with his father, Mikaela would discuss such a happening with his homunculus. That he was ill was not detrimental to his overall happiness and after asking he beleived Sika Madu's words that he would get better. Mikaela was also taken with the idea that he could grow up to be as amazing as Sika Madu.

Upon being attacked by a knife wielding assailant, Mikaela alternated between shock to appearing firmly determined to engage with his attacker both in words and physically fighting. The priority was to ascertain why he was being attacked, something he could investigate being stronger than his foe. It did not stem majorly from being fearful for his life rather seeking to understand what would have been a confusing situation.

"Why would you do something like this?! Please! Tell me why!"

- Attempting dialogue and seeking answers even when being attacked.

Finding a dagger heading for him, that was when Mikaela's outward demeanour changed to seriousness and he had no qualms about generating destructive light powers to repel an assault. When his words failed and Mikaela heard he must die, he calmly spoke how he was more powerful than his adversary. Anticipating a suicide attack, Mikaela would use his physical powers in an attempt to return him and his enemy to a state of dialogue.

"Just so you know... I'm stronger than you. I've gone easy this whole time. You'll never touch me with that knife."

- A marked change in demeanour as he calmly informs an attacker of their situation after meaning to kill him.

In having the patience and ability to gain the answers he sought, it was in fact them that affected Mikaela more than anything else. Able to fend off an attacker and verbally engage with them with a great deal of maturity, that his father was said to be lying shook Mikaela more than what he outwardly let on. Essentially himself as a child, Mikaela focused how his father said his illness can be cured, to that they were going on a picnic, and that they would always be together.

"But... But... Father said it can be cured..."

- Ultimately very much a child who believed in his father.

Expressing his emotions freely, Mikaela spoke how he was scared but this was followed up by resuming combat where there was no hindrance in his ability to generate powers. Perhaps not truly afraid for his own wellbeing, the event that struck him was seeing how he had hurt someone else. Finding that his attacks had left Paimon heavily injured and without his arm filled Mikaela with a great deal of remorse.

"Oh...! Oh no...! I'm sorry...!"

- Genuinely remorseful after finding that he has blasted off the arm of his would be murderer.

Unsure what to do, Mikaela thought to contact his father. Horrified at the sight of someone dead, Mikaela's thoughts also turned to his father once again. In considering whether his own existence is a problem for him, Mikaela contemplated how to help his father.

"Yeah. You won't ever abandon me, right? We're best friends!"

- Mikaela pleased that the homunculus agreed to never leave him.

Ambitions
A carefree child, Mikaela was set on enjoying games of hide-and-seek to acquiring ice cream for him and his father Sika Madu to enjoy. Hearing news that he was essentially a liability for his father, Mikaela would take drastic measures to attempt to avoid any ramifications for him. After ending his life, it is not known how much Mikaela knew of Sika Madu's experiences including that he had been attacked for breaking the taboo of resurrection, however he would remain committed to wanting to save him.

Realizing his goal to save his father was complicated by the fact that he was deceased, however Mikaela was able to communicate with a human child and relay his wish. How Mikaela would help Sika Madu remains to be clarified since should he return to life it would return to the matter of how he is created life, and that the second taboo of resurrection would have likely been broken.

"This'll be super hard, though. We have to go against father, after all. He's really, really smart. We're going to have to get serious if we want to get the better of him."

- Mikaela considers how he and the homunculus are planning against Sika Madu as they seemingly connect their souls.

"Now, let's get this fight started, Yu. No. Sorry. Mika. No matter how many eons it takes... ...No matter how many generations we go through... ...In the end, we'll save everybody! It'll be just the two of us as a team! Will you stick with me?"

- Mikaela is ready for his plan with the homunculus named Yu, who he changes to calling Mika as per their arrangement.

History
Described as an angel being birthed, Mikaela was visualized appearing as the fully formed child he was with clothing as well. The result of photon light based experiments, Mikaela was created by Sika Madu who had broken the angel taboo of creating life.

Mikaela was alive and present on earth during the Cretaceous era where dinosaurs roamed the land. Seemingly playing a game of hide and seek, Mikaela announced to a lizard in a forested area that he had found it. Descending to the ground with his six wings outstretched, Mikaela picked up the lizard and remarked that is where it was hiding.

"So that's where you were hiding."

- Picking up the lizard, having been able to discern there was a shadowy orb within it.

Placing his fingers near it, Mikaela poked into the lizard's mouth. Mikaela looked up to the large shadowy entity that had a single large eye which had flown out the lizard. As this orb boinged around, Mikaela was delighted and commented how he knew right away.

Speaking to the orb, Mikaela said for them to go since father is calling. With the shadow entity on his shoulder, Mikaela flew off into the air and headed towards a mountain that had ash rising from it. Mikaela remained on course for this destination as he flew through the air.

Referred to as angel Mika by Yu, he is mentioned by him and Mika as his whereabouts are searched for. A visualization of him is imagined by Yu who sees him as similar to Mika in appearance. His whereabouts deemed hard to find due to so many angels flying about in a civilisation of them and eyeball beings, Mikaela needing to be found is a pretext for Yu desiring to explore the area.

While not seen, Mikaela is again brought up in conversation between Yu and Mika who are unable to find him in the memory that are accessing. At this point in prehistorical earth, Mikaela was floating through the air with his eyeball being companion and carrying two ice creams. Unable to see Yu and Mika since they exist in the future and are viewing a memory, Mikaela is pointed out where he possibly bought the ice cream from a nearby facility.

Flying upwards, Mikaela would never know Mika was concerned with losing sight of him. As he happily turned a corner carrying his two ice creams, Mikaela flew towards the tallest tower in the area. That he was heading towards that tower is discussed by Yu and Mika.

As Mikaela drew close to an entry point to the slanted tower he was pleased to have gotten some ice cream today. Wondering if father would be happy, Mikaela stated they could eat them together, later.

"Yay! I got some today! I wonder if father will be happy. We can eat them together, later!"

- Speaking aloud on the ice cream he means to share with Sika Madu.

Mentioned whether by father he meant the First by Yu, Mikaela is also seen to enter the tallest tower by way of a long thin entrance at some point in it, then noted to have done so by Mika. The tower that Mikaela accessed was revealed to be the Tower of Babel. This Babel project was to return beings to paradise. That Mikaela went up was the reason why Yu decided to start with the highest floor where Sika Madu was found.

Although Mikaela entered through a window, he seemingly comes from the elevator to the top floor of the Tower of Babel where Sika Madu was situated. Happily greeting his father, Mikaela came with the two ice creams and the eyeball being.

Perhaps not even registering that Sika Madu had hidden screens containing information on resurrecting the dead, Mikaela was pleased to announce he had brought something tasty for them in reference to the ice cream. Before his father, upon hearing that Sika Madu had forbade him from going into town again, Mikaela just laughed.

When Sika Madu spoke to the eyeball being that he told him to keep an eye on him, Mikaela interjected to state he made Yu come with him and it is not their fault at all. Questioned if he had named his homunculus again, Mikaela joyfully answered yes. He added that it is just so sad if they do not have a name.

Continuing to interact with Sika Madu, he proceeded to affectionately squeeze Yu the homunculus. Mikaela appeared happy in the homunculus' eye. Hearing Sika Madu state that when he names a thing it could curse them with a heart, Mikaela felt giving them a name was a sign of love.

Asking why he was named Mikaela if he is Sika Madu's child, upon hearing that it was to curse him, Mikaela reacted with delight. Hugging Sika Madu and laughing, Mikaela announced he was a liar. Mikaela knew Sika Madu gave him a name because he loved him. Where Sika Madu was quiet in response to his words, Mikaela continued to embrace him as he sought to have his father admit it.

"Ha ha! Liar! I know you gave me a name cuz you love me! Right? Admit it, father!"

- Having interpreted Sika Madu's comment that he was named to curse him as a joke and seeking confirmation that he is loved by him.

His facial expression haven gone from one of joy to dejection, at being patted on the head and told that Sika Madu does love him, Mikaela beamed with delight. Accordingly, Mikaela presented the ice cream he had brought. Having known the truth, Mikaela stated he got this treat for Sika Madu and for him to take it. Questioned what it is, Mikaela responded that it is super popular in town. Guiding Sika Madu to taste it, Mikaela claimed that it was good and he consumed some of the ice cream.

At some point Mikaela had been told not to eat anything offered in the city since he has a weak constitution, yet paying no mind to the technology Sika Madu was using to analyse the ice cream, Mikaela boasted that if it tastes good, it is good for him. Suddenly coughing, Mikaela experienced what that entailed.

Attempting to persuade Sika Madu that his coughing is not because of the ice cream itself but because he just swallowed funny, Mikaela was affected by further bouts of coughing. Unable to keep ahold of his ice cream which dropped to the floor, Mikaela crouched down and held his head in his hands.

Having coughed up an amount of blood, Mikaela felt it was a waste where he did not get to eat the ice cream. Telling Sika Madu that he was sorry, Mikaela again attempted to say that it was not because of the soft serve.

Raised onto a floating platter that Sika Madu had generated, Mikaela rested on his side. After Sika Madu had detailed it was because he broke his promise and spent too much time outside where the air does not agree with his lungs, Mikaela experienced difficulty in breathing and did not respond.

Directed to go to the cleansing room, Mikaela spoke then that he did not want to. Stating that he hated that room, Mikaela spoke while trying not to cough. Listening as Sika Madu covered that if he was sick and done what he done, how would he feel, Mikaela gave his answer a moment of thought.

Responding that he would be upset, after being requested to not try and make Sika Madu upset, Mikaela said he was sorry. When told to now go, he had a questions for his father. Mikaela asked would he ever get better.

"Will I ever get better?"

- A question for his father where Mikaela is experiencing a health condition.

Assured that once he grew up he would be all better, Mikaela clarified with Sika Madu if he meant grow up like him. On growing up, Mikaela wanted to know if he would be someone as amazing as Sika Madu. Hearing yes, it was when Sika Madu stated that he could get ice cream again since it did not seem particularly harmful that caused the happiness to return to Mikaela. Asking him really, Mikaela has pleased with the idea.

Checking whether they could eat the ice cream together, hearing yes was fulfilling for Mikaela. Fine with heading off to rest now, and upright on the platter, Mikaela spoke for Yu the homunculus to come. Along with the homunculus, Mikaela headed off to rest.

"M'kay! C'mon, Yu!"

- Heading off with Yu the homunculus to rest in the cleansing room.

Unknown to him, Mikaela was the topic of discussion between Sika Madu and Paimon. Referred to as the experimental subject, Mikaela being disposed of was part of the conversation Sika Madu and Paimon had. Implied to be a created form of life, Mikaela was said to still have potential by Sika Madu. Where a cure was needed for a plague endemic to seraphs, Mikaela is suspected by Paimon to have been created for a potential one to be found.

His name mentioned by Paimon who again requests the order to dispose of him, Mikaela's fate appears in the hands by Sika Madu who requests five days to say farewells. This incoming demise mentioned would be brought forward, Mikaela was discussed by Paimon and Bael to be killed by them where it was not believed that Sika Madu would do it.

At peace resting his head on Sika Madu's lap, Mikaela was also with the homunculus, Yu on a bed within a chamber at some location. Speaking to his father, Mikaela wondered if he was still not allowed outside. Learning he would be able to soon, Mikaela asked really before answering nope, his father had never broken a promise.

Hearing they may need to move a little way from the city resulted in Mikaela appearing ecstatic. Upright, Mikaela needed to clarify whether this would move would be like on a picnic. With it like that in a way, Mikaela was happy to try and sleep as rest was needed to conserve his strength. Saying that he would be good and called a good boy, Mikaela mentioned he always is. As Sika Madu left, Mikaela looked to him going.

After Sika Madu departed, Mikaela spoke to Yu the homunculus to ask whether it heard that. Stating that he could not wait for the picnic, Mikaela said that Yu should come with them too. Hearing a sound, Mikaela looked to the open door. Calling out with the guess it was father, Mikaela wondered did he come back.

Surprised to see it was Paimon, who was also coughing up blood, Mikaela was further shocked at finding he was coming under attack by him and the dagger he had. After being defended by Yu the homunculus who was struck away, Mikaela called its name in concern. Able to grasp Paimon's wrists after he attempted to seize him, Mikaela questioned why he is doing this.

Without waiting for a response, Mikaela used his ring finger to generate a fiery tear above his hand. Speaking for it to go, Mikaela could activate a seismic blast that blew parts of the wall out the Tower of Babel. Seeing that Paimon meant to resume his attack using his full strength, Mikaela called for him to stop. While asking what was even going on, Mikaela wondered why Paimon was even being violent.

"Wait! Stop! What's going on?! Why're you trying to... ...Kill me..."

- Finding Paimon has come to him with a knife.

Moving to evade Paimon's dagger, Mikaela determinedly invoked a light based power and had it collide with the one directed at him. Standing firm, Mikaela heard Paimon mention if he lives then God will eventually notice him. His confusion not alleviated by those words, instead Mikaela asked that Paimon please wait.

Addressing how Paimon was one of father's closest guards, Mikaela brought up his name and how he knew him as the angel his father was always praising. Having his attention, Mikaela questioned why would Paimon do something like this. With no response, he requested that Paimon please tell him why.

Gathering that Paimon meant to resume his assault, Mikaela took that moment to alert him that he is stronger. Having gone easy on him this whole time, Mikaela assures Paimon that he will never touch him with the knife he has. Affirming that they both know that, Mikaela states it is why he is asking Paimon why he would even try to do this.

Anticipating that he would attempt a suicide attack, Mikaela assured him he would resist it and Paimon would really die. With Paimon unable to continue fighting having partially collapsed due to his illness, Mikaela takes the chance to find out why he wants to kill him.

Hearing it is for the King, Mikaela asks Paimon what he means by that. Learning his existence is said to be forbidden, Mikaela hears if he is discovered by God then the King will be punished. Mikaela listens as Paimon details how curing his illness is forbidden, and being created in the first place is also a taboo. Processing this, Mikaela speaks how father said his illness can be cured. Where even if it could, God would punish his father for it, Mikaela raises how his father said they were going on a picnic.

Told by Paimon it is all lies and his father means to fall into hell by himself, Mikaela mentioned that he said they would always be together. Hearing the King planned to take God's punishment to protect him leaves Mikaela appearing shaken. Once Paimon indicated he would protect the King from him and raised his knife, Mikaela said how he did not want to die. Crying out no, Mikaela said he was scared.

Manifesting light around his hand, after one beam had blasted its way out the tower and the smoke had cleared, Mikaela found he was facing Paimon whose arm was missing. Greatly alarmed, Mikaela said he was sorry. Panicking further, Mikaela wondered what he was to do. Thinking of his father, Mikaela concluded he had to call him. Directed not to, Mikaela told Paimon they cannot worry about his father potentially being hurt at this sight given his condition.

Guided to listen, Mikaela heard Paimon had an idea. Asked whether he saw what Paimon referred to as his ugly black wings, Mikaela learned his illness had advanced and he was doomed to die anyway. Listening as Paimon detailed that the King would try to save him but if he did that would be the end of him, Mikaela considered what was he supposed to do.

Addressed as the King's child and questioned how Paimon was supposed to prove his loyalty to someone he wanted to protect, Mikaela responded that he did not know that answer. Asked if he liked his dad, Mikaela appeared unsure what to make of the question. With it rephrased as does he loves him from the bottom of his heart, Mikaela at once answered yes, of course. Where that was all Paimon wanted to hear, after he remarks they are the same, Mikaela watches with his eyes wide open as Paimon places the knife near his own neck.

Having witnessed Paimon stab himself and pass away, Mikaela was stunned at the scene. Alarmed greatly, Mikaela stated that this cannot be happening. Asking why, Mikaela's focus was then drawn to the dagger Paimon used. Coughing on account of his own illness, Mikaela found blood on his hand. Considering his own sickness, Mikaela wondered would it make his father sad. Further questions concerned whether his existence would cause problems for his father as Mikaela recalls Paimon's words.

"My sickness. Will it make father sad? Will my existence... ...Make lots of problems for him? Isn't that what you said, Paimon?"

- Alone and ill, Mikaela remembers Paimon's words concerning how his father would suffer for his creation, and should he cure him.

With Paimon lying deceased nearby, Mikaela wonders now what he should do. Concerned for his father, Mikaela considers how he is really in trouble and feels it is his fault. Looking upwards, Mikaela contemplates the punishment from God mentioned.

"Now what do I do? Father. He's really in trouble, and it's my fault. Punishment... ...From God."

- Making up his mind on what to do given his father is endangered by his existence.

Looking to the knife on the ground, Mikaela's transfixed gaze comes to an end after he picks it up. Holding the weapon to his throat, Mikaela spoke aloud to his father how he was scared. Mikaela stated he could not find the courage to do it when he thought it came to that. What Mikaela did know was that he loved his father a whole lot.

Lying deceased on the ground, Mikaela's body with a injury to his neck was found by Sika Madu. Held by him that Mikaela has perished resulted in Sika Madu speaking of his despair over this. Mikaela was held all the while as Sika Madu doubted the purpose of reaching paradise now, as well as what Bael would do having fallen ill with the same illness he had.

Mikaela remained in Sika Madu's arms as he heard from Bael on what he wants. Similarly he was held tight as Sika Madu learned Bael was aware of his planned resistance. As with these events Mikaela was physically near as Bael wondered whether this was part of God's plan. His name was mentioned by Sika Madu after he was left alone and spoke he felt lost.

It was visualized how Mikaela was brought into existence. A coffin containing Mikaela's body was lowered by chains through a portal with the night sky on one side, to where Sika Madu was within a room. The blood had been cleared away and Mikaela lied with his hands together. Mikaela's existence was spoken of when Sika Madu communicated to an unresponsive God. His hands were touched before Sika Madu stated he will use Babel's light to resurrect Mikaela.

Likely unknown to him, Mikaela is said to hold seven keys which contained the concentrated light to resurrect and extend the lives of all angels. These seven keys and their resurrection capabilities match the description of sinful keys of later ages that were divided amongst individual seraphs. Mikaela's name is mentioned again by Sika Madu when he directed the homunculus named Yu that he is to covert the light of the tower into darkness in order to resurrect him.

Where that drew the attention of trumpet wielding seraphs, Mikaela's chance of resurrection at that point was stopped after Yu the homunculus came under attack from them. The state of his coffin would not be known after the Tower of Babel where it was kept was destroyed by a lightning strike from the seraphs. Neither was its status known after a humanoid angel summoned fiery meteors to destroy the seraph civilization utterly, and end Earth.

After a millennia, it would be shown that Mikaela's body had been saved. Mikaela's coffin would be brought forth by the homunculus Yu after it could generate itself from darkness that Sika Madu could come to form. Having been secured at some point, Mikaela's body was preserved as it was placed before Sika Madu. Mentioned as they discuss him, that Mikaela has been suffused with seven keys containing enough light to resurrect everyone is a reason Sika Madu needs to resurrect him as an angel first.

His resurrection now rests on the darkness able to be gathered by humans. Where the first humans seen on Earth have been formed by the homunculus with Sika Madu's power, and had angel souls raised to to be placed in them, Mikaela's coffin is noticed and approached by the first child that was produced on Earth. Appearing deceased under the glass of the coffin, Mikaela is called pretty by the youth and asked who he is. From the child's responses, Mikaela is able to communicate with him.

Having wordlessly shared that his name is Mika, he evidently answered the other child's question on why he was sleeping was because he was dead. Questioned what that meant, Mikaela explained it as that he could not play with the boy, and spoke further on some matter.

In detailing a plan, Mikaela had told the first human that spoke to him that he wanted to out his soul inside him. Upfront that he would be that boy, Mikaela wanted to save his dad. Invited to enter the body, it may be the case that Mikaela was conscious in the human. Confirmed, Mikaela was in the area where seemingly there was a human link between Paimon and a human with Bael's soul, though he did not react to their spirits in human bodies.

Instead, Mikaela made a surprised sound given he had just underwent a sudden process where he was now inhabiting the body of the human who spoke to him. Jolted at finding he was being spoken to by Sika Madu, where he was seen by him as the human boy, Mikaela remained fixed in his position.

Whispering for Yu the homunculus, Mikaela in the human boy's body discreetly requested that it come here, quietly. Awaiting a broken of section of the homunculus to travel over, Mikaela found it blink before him and then spoke at once how father was really smart. If he finds out he is Mika, he would instantly try to protect him no matter what. Given that, Mikaela stated that he could not get his plan to work if he is stuck getting coddled.

In response to the homunculus making a sound, Mikaela asked it what should they do. They would have to lie and make sure that Sika Madu did not find out. To be extra sure he didn't, Mikaela decided that he needed to find someone else to be "Mika" in his place. For the homunculus appearing unsure at who he meant to take his place, Mikaela's look confirmed that it was indeed the homunculus who was to imitate his form.

"What should we do, Yu? We'll have to lie, to make sure he doesn't find out. And to be extra sure he doesn't... ...I need to find someone else to be "Mika" in my place."

- Forming a plan with Yu the homunculus for it to assume his physical appearance.

With the homunculus expressing doubts, Mikaela could understand what it was communicating and stated that is not what it said before. Raising whether it remembered, Mikaela mentioned how it promised that it would stay by him and protect him for its whole life. Mikaela questioned whether the homunculus was just going to abandon him.

After the homunculus indicated no, Mikaela was happy in saying that Yu would never abandon him as they are best friends. Stating for them to do this together, Mikaela extended his hand while directing them both to connect their souls together. With them together, Mikaela announced Yu and Mika will be one. His right middle finger sent forth a black shadowy tendril towards the homunculus which did the same.

"Then let's do this together. We'll connect our two souls together. Together, Yu and Mika will be one."

- With his spirit in the body of a boy physically resembling the human Yu, he joins his soul with a homunculus named Yu. Mikaela's soul would be hidden within a human, and the homunculus would become his physical body.

As the thin shadows cast from each fizzled upon them connecting, Mikaela in the human boy's body spoke how this would be super hard though. Explaining that they have to go against father, Mikaela took into account how after all he was really, really smart. They were going to have to get serious if they wanted to get the better of him.

For that, the next part of the plan involved Mikaela happily detailing that he would forget that he was Mika. His spirit ever in the body of the human boy, Mikaela meant that he would take on the identity of "Yu" completely. Directing the homunculus to do the same, Mikaela said for it to forget everything since as of now it was Mikaela.

"Next, I'll forget I'm Mika. I'll become "Yu" completely."

- Able to erase his own memories, to assume the identity of the human Yu.

Apparently seeing the plan as promising, Mikaela stated that as long as the homunculus was a convincing "Mikaela" then father would not ever succeed in resurrecting him since his soul was really over in the physical body of a human. Promptly moving forward, Mikaela framed it as a fight to get started. Speaking for Yu the homunculus to commence it, Mikaela then spoke to it as in character by instead calling the homunculus Mika, the identity it was to become.

"As long as you're a convincing "Mikaela"... ...Father won't ever succeed in resurrecting me. Not when my soul is really over here, in this body."

- Arranging for the homunculus to imitate his physical body, where Mikaela's spirit will be in the human he is currently conscious in.

No matter how many eons it takes, no matter how many generations they go through, Mikaela said in the end they would save everybody. Still connected via the shadow with Yu the homunculus, Mikaela spoke that it would be just the two of them as a team. Asking whether the homunculus would stick with him, after it nodded to indicate yes, Mikaela laughed with joy.

Mikaela directed the homunculus who he now called Mika to jump in his body which remained in the coffin behind. Saying for it to then take the seven lights that he was aware of inside of him, Mikaela added for it to send them flying far out into the world. Where father would not be able to reach them, Mikaela reasoned that way it would take even longer before Sika Madu would try and resurrect him.

"Mika. Jump in my body. Then take the seven lights inside me... ...And send them flying far out into the world, where father can't reach them. That way it'll be even longer before he can try to resurrect me."

- Addressing Yu the homunculus as Mika and saying for it to cast what were sinful keys across Earth.

Standing still as he and the homunculus carried out this plan, Mikaela in the human boy's body did not respond to Sika Madu when asked what he is doing. Instead, Mikaela was able to manifest a shining light around his finger which he pointed to his temple before speaking to erase his own memories. As the process was underway, Mikaela reiterated how he was Yu for that new identity to sink in.

Where the homunculus had entered his physical corpse, that broke out the glass top of the coffin as if alive with all six wings out. Observing this with curiosity from the human body he was ever in, as he maintained the light based power to erase his memories, Mikaela stated he would see the homunculus called Yu who was now in Mikaela's corpse and was called Mika as the identities switched. Even if he forgot everything, even if he died countless times, the soul of Mikaela promised that he would collect all of the homunculus in his physical angel body.

Hearing from the homunculus who could speak through his physical body that it was animating, Mikaela heard it was a promise as he was called Yu as per the arrangement for them to switch identities. The memory erasure process may have been complete at the point that seven streams of light shot out from Mikaela's corpse that the homunculus initiated.

If Mikaela had his memories erased or he was just feigning to be unsure what Sika Madu was talking about, either way the human boy who he had occupied would be murdered by Sika Madu when he attempted to check his memories. The human boy had no memories at all, before he fell to the ground dead. As for the status of Mikaela's spirit given the child he was in had just been murdered, there was another child produced by Yu the homunculus that appeared to have the feeling there was something it needed to do.

The physical body of Mikaela was around at some point during the Dark Ages of Greece. His corpse is held in a large see through coffin within in a large room, off limits, and is observed by Noya, along with Ashera and Krul. Noya comments he was "what all of us were meant to become but failed" and they figure what to do about the Mikaela. He is also seen by a young Yu and although stated to be deceased, Mikaela's mouth had opened slightly during the period that others were observing him. He is later referred to as Sika Madu's son.

Within a room containing clear fluid filled tanks, Mikaela is observed in his coffin by Yu as a child. Unresponsive to the happy calls that it is time to wake up, Mikaela is referred to as a princess to be rescued by Yu. Where Sika Madu mentions that a kiss could not bring him back to life, it is also commented that more time, with more sacrifices would be required. With Yu having a secret, he tells Sika Madu that although Mikaela is dead, sometimes he will still talk to him. Where he has not spoken to Sika Madu in eons, Mikaela is planned to be brought back to life by Yu and Sika Madu. When Sika Madu and Yu were discussing matters around his coffin, this scenario was observed by Ashera.

Shibuya Arc
In the present time Noya is surprised upon seeing Mikaela Hyakuya and excitedly wonders if Sika Madu succeeded in creating a Mikaela.

Post-Shibuya Arc
Visualized when Saitō is speaking to Lest Karr about the third progenitors, Mikaela is seen within his coffin in the centre of a pillared room. Surrounded by Asuramaru, along with Byakkomaru, then Gekkouin, also Kiseki-o, Raimeiki and Noya, above him floats a ring of Black Suns. In this location, Mikaela had Sika Madu carrying a seemingly unconscious Yu towards him.

When Mika is a demon with no memories of himself and makes contact with an eye he comes across, a memory of Mikaela's coffin within the room filled containing clear fluid tanks is viewed. Where he was deceased, Mikaela did not react to Yu coming in and calling for him to get up. Neither could he respond when Noya remarked that Yu was to be the sacrifice to bring him back from the dead. His coffin was covered with Yu's blood after Noya murdered him. In this memory that Demon Mika is accessing, that Shikama Doji has joined, the coffin is absent as electricity surges outwards after Demon Mika agrees to become Yu's demon.

Akihabara Arc
Mentioned by Saitō, it is gathered that Shikama Doji wants to bring Mikaela back to life as he was his son. Vampires including Urd, and third progenitors such as Lest Karr, and Krul Tepes were guessed to be test subjects to see whether they were strong enough bodies to house Mikaela's soul. He is referred to again when Saito questions the First whether Mika is a vessel up to the standards of allowing his resurrection.

In a discussion how Mikaela must be the same species as Shikama Doji, while Saito is unsure of whether he is an angel or demon, the price of resurrecting one would be unimaginably large, enough that the seraphs would punish the attempt. Mikaela's resurrection is to be thwarted by Saito, along with Urd, then Lest Karr and Ky Luc at least who are wary of a potential second destruction of the world.

After Mika has regained his memories as a demon and been rescued, Yu shares how he has memories from before he was born. In some really old ones and due to the resemblance, Yu says he remembers seeing Mika's corpse where Mikaela is visualized.

Mount Fuji Arc
In delving into a memory, the First's mansion is sought out by Yu and Mika where Mikaela is noted to be kept within a single casket inside a vast underground chamber. Inside the casket, Mikaela is seen in the memory that Yu and Mika are accessing. He is regarded as looking just like Mika by Yu who also bets he is an angel.

On what Yu can remember from long ago, it is mentioned how Mikaela and him were talking. He is observed by Mika who wonders if his lookalike can talk. Memories of Mikaela alive and playing with a shadowy like being with a single eye are seen by Yu and Mika who have accessed scenarios from the time of when dinosaurs were on earth.

Memories of Mikaela from prehistory are viewed by Yu and Mika accessing them from the present time. That he lived in a seraph civilisation and could access the Tower of Babel was also seen. In interacting with his father, Mikaela would have no idea that Sika Madu may have been lying about him getting better. Mikaela is discussed by Yu and Mika in this memory as being the one where he died.

Again unknown to himself, the circumstances of the attack he endured from Paimon is also viewed by Yu and Mika. Being observed by those from the future, Mikaela would not know Yu had praised his light based powers. Neither would Mikaela respond to Yu saying for Mika to not pick up the dagger. The circumstances of his passing is seen by Yu and Mika.

His coffin is viewed by Yu and Mika, where it is known by them that he was able to speak to the first human produced on Earth. After the scenario of Mikaela's soul apparently having entered the human who resembles Yu, presently Yu feels he remembers that in fact he is Mikaela.

Sika Madu
His father, Sika Madu was the first vampire and kept his body preserved during the dark ages of Greece. By the present day, Shikama Dōji states that he is trying to save him, as Mikaela is his precious son. Said to not have spoken to him in eons on account that Mikaela is deceased, he is stated to be cared for by the First, where he is planned to be restored to life.

In the prehistoric past, Mikaela was seemingly able to receive communications from Sika Madu. Referring to him as father, Mikaela headed to return to his location within a seraph civilisation.

"C'mon. Father's calling."

- Speaking for a shadowy orb he is with to come since father has called.

On the way Mikaela had acquired some ice cream for him. Wondering if father would be happy, Mikaela was pleased with the idea that they could eat the ice cream together later. Bringing them to Sika Madu, he had apparently disregarded previous directions to not head out into the city. Laughing in response, Mikaela would also also react with joy at Sika Madu claiming he named him to curse him with a heart.

"Then why'd you name me Mikaela, huh? I'm your child."

- Wondering why Sika Madu named him if it is a curse to name someone.

Thinking Sika Madu was joking, Mikaela proceeded to hug him. His joy was short-lived after he pressed his father to admit he named him because in fact he loved him, yet received no response. His expression perhaps noted, Mikaela returned to being happy once Sika Madu spoke that he did love him.

Experiencing the effects of an illness, Mikaela attempted to say that it was not because of the ice cream. Telling his father he hated a cleansing room he was to be taken to, Mikaela responded that like Sika Madu he would be upset having gone out where his condition was exacerbated and said sorry for it. Asking his father whether he would ever get better, Mikaela was encouraged by words that he would, and grow up to be amazing like Sika Madu.

"Growing up, huh? Will I be someone as amazing as you?"

- Keen on the idea of being like his father, Sika Madu.

The idea that he could get ice cream again was one Mikaela found joyful. After checking whether they could have it together, Mikaela was content to head off to rest. A planned picnic was also something Mikaela looked forward to, and he would never consider that his father would lie about this.

"But... He said he'd always be with me."

- His response to hearing that Sika Madu means to accept God's punishment so long as he was cured.

Shocked at the details that in actuality his father meant to endure God's wrath for creating him, and curing his illness, sparing his father that was the reason why Mikaela would take his own life. Loving his father from the bottom of his heart, Mikaela took into account his existence could cause problems for him.

"Father. I'm scared. I can't find the courage to do it. But... I love you a whole lot too."

- Speaking of his feelings for his father while holding a knife to his throat.

His passing would leave Sika Madu devastated, to the point he would delay using the light gathered in the Tower of Babel to instead work to resurrect Mikaela. With his body returned after Sika Madu's initial resurrection attempt was fettered, Mikaela's resurrection is a priority for the seven keys of light within him that can be used as a different method of restoring the fallen angels.

"Father's really smart. If he finds out I'm Mika, he'll instantly try to protect me no matter what. But I can't get my plan to work if I'm stuck getting coddled."

- Mikaela's spirit inside a human boy speaks to the homunculus having formed his own plan.

Mikaela Hyakuya
At seeing Mika, the demon Noya is under the impression that Sika Madu succeeded in created a Mikaela. They are physically similar as children, yet Mikaela's ears were pointed where Mika had human appearing ears. Mikaela's corpse would have been available to see by Demon Mika were he not focused on other parts of a memory. When Mika arrived at the Hyakuya Orphanage, Saito also noted the resemblance and questions if this is a vessel concerning preparations for Mikaela's resurrection.

Yūichirō Hyakuya
When lying deceased in his coffin, Mikaela was found by Yūichirō Hyakuya who joined the forbidden room that Ashera, Krul, and Noya were in. Visited more than once by Yu who was fond of him, apparently Mikaela had been speaking to him. Interactions with Yu would occur fast later in the past than that time.

Noya
His corpse is observed by Noya when he was a vampire in the ancient past. Mikaela is regarded as what he and others were meant to be but failed.

Ashera Tepes
After Ashera Tepes became a vampire, Mikaela's existence and that he was Sika Madu's son became known to him.

Krul Tepes
When Krul Tepes entered the forbidden room that Mikaela's corpse was kept in, his being was seen by this vampire.

Saito
That he is the First's son is known to Saitō, a second progenitor vampire who has been tracking Shikama Doji. Due to his relation to the First, who Saito seeks to undermine, and because of the nature of his being, Mikaela's potential resurrection is not something Saito wishes to see enacted.

Urd Geales
The other second progenitor vampire, Urd Geales, where Mikaela's resurrection may rest on his actions where he is against it.

Lest Karr
Third progenitor Lest Karr, who was seemingly discounted in Sika Madu's plot to help resurrect Mikaela. Due to what his resurrection might bring about, Mikaela being restored is not something Lest Karr is in favor of.

Ky Luc
His fate influenced by Ky Luc, a fifth progenitor, Mikaela's resurrection may be affected by his actions against the event.

A Homunculus Named Yu
A shadowy orb resembling a black sun, that had a single large eye and appeared to be sentient, was sought out by Mikaela in an apparent game of hide and seek. Away some distance from where they may have lived, Mikaela could tell where this being was where it had concealed itself within the body of a lizard. He travelled with this being to the Tower of Babel.

Where the homunculus was meant to be monitoring him, Mikaela speaks how it was not its fault as he made it come with him. Apparently having named others, Mikaela calls this specific homunculus, Yu.

"I made Yu come with me! It's not their fault at all!"

- Revealing the eye ball being name as Yu.

Finding a particular joy in naming homunculus, Mikaela considers it an act of love. Squeezing the homunculus affectionately, Mikaela would also head to the cleansing chamber with Yu. Interacting with the homunculus as a confidant of sorts, Mikaela was also happy to invite it to picnics with his father.

"Yu, didja hear that? A picnic! I can't wait! You should come with us too!"

- Excited to invite Yu the homunculus to a picnic with him and Sika Madu.

When Mikaela came under attack from Paimon he was defended by this homunculus. Mikaela's possible resurrection was in the hands of the homunculus who worked to darken light into order to restore him. While the initial attempt was interrupted, Mikaela's body would be kept safe by the homunculus for millennia and brought to Sika Madu once darkness was able to be made to enable the return.

"Yu? Yu... Come here. Quietly."

- Mikaela is within the body of a human child where his spirit has entered to gain consciousness there, and speaks for the homunculus named Yu to furtively join him.

"Aww! That's not what you said before! Remember? You promised you'd stay with me and protect me for your whole life!"

- Mikaela responds to the homunculus' startled response to his idea of it taking his place.

"You do the same. Forget everything. As of now... ...You're Mikaela."

- Mikaela directs the homunculus to forget its identity as Yu, and become him in his place.

"See you, Mika. Even if I forget everything... Even if I die countless times... ...I promise I'll collect all of you."

- Mikaela bids farewell to Yu who he calls Mika who is in his physical body.

The Child Who Resembles Yu
This child was the first human seen on Earth and was brought there by the homunculus named Yu. As with other children his purpose was to gather darkness of which Mikaela's resurrection now rested on that. Also on Sika Madu's command, an angel soul that had fallen to Hell had also been placed within the child. Where Mikaela's coffin was noticed by him, Mikaela was called pretty by him and asked who he was. It was the case that even though Mikaela was deceased he was able to communicate through some means with this youth.

Having shared his name as Mika with him, Mikaela was able to explain his death as meaning that he could not play with him. While with others Mikaela would have questions for them, and was upbeat, with this child Mikaela was very direct in that he wanted to put his soul inside to become him where he was focused on saving his dad. Invited to enter the body, Mikaela may have this human child as a host to interact with the world around him where he could not before.

There is a unique connection with this child, where it is not clear why Mikaela would be able to contact him. If proximity were a factor, then Mikaela had Sika Madu near him where contact with the glass was also done. It is not known if Mikaela had any interaction in the time he spent with the homunculus named Yu. For whatever reason it was a human Mikaela could make contact with.

Paimon
An angel who was around in the same seraph civilization and prehistoric time period that Mikaela was alive in. One of his father's guards, Mikaela seemingly knew him through reputation. Coming under attack from Paimon, he attempted to find out why he was even being targeted.

"You're one of father's closest guards, right? Paimon! That's your name. You're the angel father's always praising!"

- Aware of Paimon from what Sika Madu has said.

Capable of fending off Paimon in a fight, and demonstrating he was stronger than him, Mikaela expressed some degree of concern for his wellbeing. Consistently, Mikaela sought to understand Paimon's motives for wanting to kill him.

"Next, you're going to try a suicide attack, right? But I'll resist it. You really will die!"

- Accurately seeing what Paimon means to do, and concerned for him to some extent.

It was not coming under attack but gaining the answers he sought from Paimon that shaped Mikaela the most. Upon hearing Paimon detail how Sika Madu had created himself and also intended to cure his illness, Mikaela learned that would bring God's wrath upon his father. Susceptible to his seemingly heartfelt words and actions, it was viewing Paimon use a knife on himself that implanted the idea for Mikaela to do the same.

Having witnessed Paimon who claimed to love his King from the bottom of his heart use a dagger to end his own life, Mikaela would be swayed to imitate that having believed his words that his existence endangered the life of his father. Mikaela did not lose to him in combat but died all the same on account of Paimon's manipulative influence.

Quotes
"Found you!"

- His first words in the series, spoken to a shadowy entity that he can perceive hidden in a lizard during the time dinosaurs roamed the earth.

"Aha ha! I knew right away."

- Pleased to see a shadowy orb that had hidden itself within another being.

"Awww! But giving them a name is a sign of love!"

- Naming as an act of love for a homunculus.

"Heh heh! I knew it! Here! I got this treat for you! Take it!"

- Triumphantly announcing he knew his father loved him before presenting the ice cream he brought.

"It's super popular in town. Taste it. It's good!"

- Feeling the ice cream is popular and encouraging Sika Madu to try it.

"If it tastes good, it's good for you!"

- His reasoning for enjoying the ice cream.

"Move?! Like on a picnic?!"

- Excited at the idea they could head out the city.

"We both know that! That's why I'm asking why you'd even try to do this!"

- Feeling Paimon knows he cannot win, then in his position of strength he seeks answers to what he would like to know.

"Oh gosh...! What do I do?! Father...! Yes. I have to call father!"

- Seeing how he has wounded Paimon and thinking of who to contact.

"Erase my memories. I am Yu. I am Yu. I am..."

- Mikaela inside the human boy who looks like Yu of later ages, erasing his own memories and assuming the identity of Yu the homunculus.

Trivia

 * When Noya, Ashera, and Krul discovered the corpse of the winged being Mikaela, Noya called Mikaela "what they all were meant to become but failed to", implying the true nature of the Mikaela trait.
 * Due to the four large feathered seraph wings on his back, it is possible that Mikaela is a seraph. He lived among seraphs who were seen in their own form of cloak-like beings with fire in place of heads. This was confirmed when there was revealed to be human appearing angels.
 * Seen deceased throughout much of the series, it was Chapter 123, "An Ancient Game of Tag" that first provided details on Mikaela when he was alive in the prehistoric past.
 * He is Sika Madu's son, and mentioned to have been been created by him.