Mahiru Hīragi/Relationships

Mahiru Hīragi is a prominent member of the ruling Hīragi family who control the Japanese Imperial Demon Army. She loved Guren Ichinose but was arranged to marry Shinya Hīragi who was adopted into the family. Mahiru interacts with various other characters throughout the Seraph of the End series particularly the prequel light novels, which affects herself and the story. This article details Mahiru's relationships with other characters, the being that was formed when Mahiru fused with the demon Noya and their relationships may be viewed on the article Mahiru-no-Yo/Relationships.

Kureto Hīragi
Mahiru's half-brother, a fellow member of the prestigious Hīragi family and the most likely to become the next leader of the Demon Army. He says he trusts Guren and sends Guren on an extremely dangerous mission to Nagoya. He wants Guren to work for him and his ambitions, but Mahiru wants him to follow her. Mahiru often played with Kureto when her demonic side got stronger. She later fights Kureto when she was a vampire and overpowered him not before leaving even though she stated that she would kill him.

Shinoa Hīragi
Out of everyone in the Hīragi family, her younger sister Shinoa was the only one who Mahiru genuinely loved and cared for. Although, according to Shinoa, they were not close; she explains that the Hīragi children are raised without knowing familial love, but Shinoa appears to care a lot about her eight years later. In truth, Mahiru worried for Shinoa deeply when she was still human. After realizing the demons residing within their bodies due to their heritage were slowly consuming their minds with age, Mahiru in desperation managed to remove the demon in Shinoa and bore two demons in her own body to protect her from becoming a Namanari. Days before the Apocalypse, Mahiru had Guren pass Shikama Doji to Shinoa, returning her the demon she was originally born with so that Shinoa will survive the Apocalypse. She was also determined to save Shinoa when Shikama Doji possessed her body.

Shinya Hīragi
When they met for the first time as ten-year-olds, Mahiru told him she would never fall in love with him as she already had someone. Had Mahiru openly stated to her family she did not want Shinya, they would have disposed of him; on the other hand, Guren was not allowed by her family. For these reasons, they both agreed Shinya would be her cover-up fiancé until she could be with the person she loved.

Later on, when Guren and his squad found Mahiru performing a ritual in Seraph of The End nearly prior to the apocalypse, Mahiru was angered by Shinya's comments on her obsession with Guren and in a rage, she remorselessly and violently killed Shinya in anger. After splitting away from Noya the spirit of Mahiru would see that Shinya can see her. She repelled him with chains as Mahiru continued her attempts to persuade Guren to become a demon ad betray everyone.

Seishiro Hīragi
Mahiru's half-brother and a higher-ranking member of the JIDA. Mahiru, being Seishiro's superior in combat is completely unafraid of and able to intimidate him. Despite Seishiro resenting her, in return Mahiru shows nothing but utter disgust at Seishiro for his behavior to the point of even saving Sayuri, who Mahiru dislikes for loving Guren, from him.

Tenri Hīragi
Mahiru was favoured by her father Tenri due to her power and intelligence, and she was planned to be made the next leader of the Hīragi Family. Mahiru also stated that she is "sure" that Tenri places "much more" trust in her than Kureto, because she was stronger. The disgrace she earned by becoming a demon was extreme enough to ignore the existence of her half-sister, Shinoa Hīragi.

Saitō
The former second progenitor of the vampires, he and Mahiru worked together for the Hyakuya Sect. They appeared to have co-operated well with each other.

Akane Hyakuya
In the light novel, Mahiru speaks to her to find out she has a crush on Mikaela.

Junji Hyakuya
When she arrived to adopt him as Miyuki Yamada, Junji was initially nervous and adamant about not going with her and staying at the orphanage. After being calmed down by Mika, Mahiru reassured him that he will like it with her and he willingly leaves. Shortly afterward, Mahiru murders someone in front of him and knocks him out, and when vampires attack them, she protects Junji.

Mikaela Hyakuya
Mahiru uses the name Miyuki Yamada and she talks with Akane Hyakuya and realizes she has a crush on Mikaela. When Mika was wondering how he would save Yu from Guren's capture in Shibuya, Mahiru found his location and answered that a rescue was quite beyond him. After merrily introducing herself to Mika as everyone's favorite idol Mahiru remembered the plan she was a part of and set about attacking Mika. Aware of his link to Krul Tepes, Mahiru was taken aback at his strength before proceeding to thoroughly enjoy herself as she deployed multiple spells to pressure Mika into abandoning the battle to rescue Yu. With Guren and Noya she took part in the fight against Yu and Mika. Seeing Mika undergoing a demon transformation process is a part of Mahiru's plan that Noya is unaware of.

Yuichiro Hyakuya
As a child when he was in locked up in a cell, she spoke to him briefly about his woe at being considered a demon spawn. Mahiru asks why he thinks like that, adding that Yu looked human to her and demon or not, he should get to live. Before leaving, she told Yu to stay strong and that one day she would come back to free him from the Hyakuya Sect, prior to the researchers messing with his memories. True to her word Mahiru would find Yu again as a spirit floating before him. Whilst he remembered Mahiru went ahead with her shared goal with Guren and Noya in attacking Yu.

Guren Ichinose
According to Shinoa, all Mahiru wanted was to love him, but her family did not approve. Mahiru's desire to be with Guren was what caused her to turn against the Hiragis. Even when in her Namanari form, she still loves Guren and would not kill him, but is not above being cruel and fully willing to non-lethally harm him, and she is motivated to make sure Guren gave in to his Demon and be with her. She is shown to be particularly cruel towards any girl with a crush for Guren, displaying a strong possessive side. Even before being taken over, Mahiru already showed this rage towards Sayuri Hanayori and Shigure Yukimi, quickly turning dark when Guren nonchalantly praised them behind her back. Along with that, she was also deeply distraught by Guren's coldness towards her. Her human personality was able to resurface at times and she showed deep remorse for what she had put Guren through and tried to ensure his safety whenever her demon put him in potential danger. On his part, Guren's love remained as strong as ever and he desperately tried everything to save her, even trusting her human side and even making love to her, which she would later on flaunt to Shinoa, even going as far as to actually describe how she felt when they did it. Prior to the apocalypse she lied to Guren multiple times to protect him from the experiments she was doing and other dangerous places to keep him safe but she eventually had a final confrontation with Guren and his squad where she effortlessly kills Guren's teammates but leaves Guren alive and bitterly asks if Guren hates her now. Guren never hated her or resented Mahiru and only wanted to save her, which moved Mahiru to tears as she stabbed herself using the sword Noya (which had a seal on it already). With her demon and human side merged, Mahiru retained her love for Guren as Mahiru-no-yo and she is delighted whenever Guren chats with her in his mind. Although not above taking control at times, she mostly allowed Guren to do whatever he does. She manifests quite often when Guren mentions her or Shinoa, much to her happiness which she sometimes complements him, though he ignores her. Indeed, Mahiru went as far as to comfort Guren in her demonic form, willingly shouldering the blame of causing the Catastrophe along with him.

Norito Goshi
A member of the prestigious Goshi family and Guren's squad since he was 15 back in high school prior to the apocalypse. He enjoys making fun of Guren.

Sayuri Hanayori
For her crush on Guren, Mahiru is disliked by Sayuri who is jealous as she can never win Guren's heart. Mahiru dislikes her in equal measure as well and sadistically taunts Sayuri on how she can never be with Guren. She outright reveals that she did it with Guren out of spite. Although at one point Mahiru saved her from Seishiro, she appeared to dislike having to do so and even expressed her jealousy of Guren's care for Sayuri by angrily telling him that he is too weak and cares for her. Mahiru is further infuriated when Guren mockingly says that she did well. As a vampire, Mahiru's dislike of Sayuri has apparently intensified where she expresses clear displeasure when Guren touches Sayuri's breast to save her in front of her and later on killing her.

Mito Jūjō
Mahiru is utterly adored by Mito in high school with her strength and kindness admired to the point she is called a "goddess". On Mahiru's part, just like with Sayuri, she dislikes Mito for her love for Guren and experiences pleasure at the idea of her painfully dying. As a vampire Mahiru is even more resentful and coldly rebuffs Guren for caring for Mito in front of her and killing her. When Mahiru became Guren's demon weapon, she hates Mito the most out of all Guren squad.

Shigure Yukimi
A member of Guren's squad since she was 15 from back in high school prior to the apocalypse. Mahiru resents Shigure just as much as she resents Mito and Sayuri due to her love for Guren. Hearing Guren praise Shigure visibly infuriated her. Mahiru flaunted the fact she had did it with Guren gleefully to Shigure and as a vampire coldly rebuked Guren for caring for her in front of her and killed her.

Krul Tepes
She was turned into a vampire by the queen of Japan, a third progenitor and they made a deal with each other eight years before the apocalypse. When meeting with Guren, Krul asked if he was a messenger of Mahiru, and immediately showed a hostile side when she thought he was not. When burning in her ten days of exposed torture, Krul acknowledges that Mahiru kept her side of the bargain after finding out that her brother is inside Yu's sword. Mahiru would tread close to where Krul was and saw that she was being guarded by Ky Luc.

Ferid Bathory
She and Guren come across him at a zoo. He was able to see her while she was a demon hinting at the possibility of them working together.

Ky Luc
Finding this fifth progenitor monitoring the sun exposure torture that Krul and Ferid are weathering Mahiru assesses that he is right that there might be a ghost. Whilst she cannot be seen something about her can be detected. Knowing that he was there and appearing in the road before Guren caused him to change his path from where Krul and Ferid were to heading for Ferid's manor where Shinoa squad was situated.

Asuramaru
Mahiru formed a contract with him while she was human. Nothing is ever explicitly shown about how their relationship was, but it can be assumed that it was solid, judging how he was obedient to her when she called his name.

Shikama Dōji
The demon currently contracted with Shinoa. Mahiru formed a contract with him when she was human. It is later revealed that Shikama Doji may have possessed Mahiru prior to handing it to Shinoa who was capable of resisting Shikama Doji thanks to Mahiru's protection.

Byakomaru
Mahiru meets Byakkomaru when Guren Squad leaves to go Osaka. Byakkomaru is immediately able to tell she is not a demon but decides to not do anything about it unless she hurts Shinya. Mahiru likely thinks lowly of Byakkomaru because she calls him a beast.

Noya Hienma
Mahiru is the one who prepared him as a demon weapon for Guren. She eventually used him to stab herself and integrate him in her heart; spreading the curse all over Mahiru where Noya absorbed her in the process thus transforming it into Guren's current demon, Mahiru-no-yo. Noya later separates from Mahiru, as the latter was inside her with the demonic personality. However Mahiru's personality towards Guren never changes her love for him. Though her personality is different since Noya was revealed to control her demonic personality when she was Mahiru-no-Yo. Due to their separation Mahiru became in a spirit-like state. She hates Noya for his goals against Guren and his demon attitude. When Noya and Mahiru return to Guren's sword it remains Mahiru-no-Yo which can be called upon as a weapon but they are still separated from each other.