Seraph Experiments

Angels (天使,) are used as weapons of the Japanese Imperial Demon Army. After being mentioned at the end of chapter 1, they physically appear in chapter 32. Kureto Hīragi has them prepared for transport during the Nagoya Arc as part of his plan to imprison the vampires in Nagoya.

They are live subjects, who are heavily medicated in order to force them into submission. According to Kureto, they are vital to humanity's survival.

Seraph
Some seraph were experimented on by the Hyakuya Sect prior to the Apocalypse. The term "seraph" refers to a type of angel. Guren Ichinose has been experimenting on them as well. So far, all of those tested are capable of handling Black Demon Series weapons. Other surviving human organizations around the world have experimented on the Seraph of the End, but even their cruelty pales in comparison to the that of the Demon Army. Both the Hyakuya Sect and Demon Army erase the memories of the experimentation from their test subjects. Mikaela Hyakuya has been on missions overseas to destroy the surviving cult groups. The test subjects often scream or even beg for death prior to their transformations.

Like the Four Horsemen of John, the seraph strive to kill all humans and display absolutely no interest in vampires if they transform properly. They speak in archaic language and have no recollection of their human identities.

Kureto Hiragi succeeds in controlling the 5th trumpet for a period of time by making many sacrifices and using the demon Abaddon to possess her.

Some of the angels have abilities loosely related to those listed in Revelation chapters 8 through 9 in the New Testament of the Bible and are referred to by their trumpets.

In the Catastrophe light novels, Mahiru Hīragi brings Guren some documents listing the Seraph of the End subjects. He collects at least four of them before betraying them during the Nagoya Airport experiment in the Vampire Reign manga series. He has been involved in the transformation of at least two of them thus far.

Appearance
The appearances of the seraphs in their transformed states vary tremendously, but they all appear to have a wing or wings so far. It is unclear if this is related to their suitability to the experimentation, what proportion of their body is considered seraph, or which type of experimentation has been performed on them.

So far, the only completely awakened seraphs that have appeared in the story are Mirai Kimizuki and Yūichirō Amane. Their appearances vary greatly. Mirai, the 5th trumpet, has two giant pairs of feathered wings from her back with a giant trumpet floating beneath her. The curse marks on her skin from the Apocalypse Virus disappear as well. In the anime, the opposite happens and the number of markings increase despite the fact the virus has no reason to effect an angel. When Abaddon possess her, the demon manifests in a giant dark figure with many wings behind her and is partially formless. Yu, the 2nd trumpet, has dark sclera and a single pair of irregular black wings once he completely transforms. Although Mirai's wings are bird-like and have feathers, Yu's wings are not bird-like and do not have feathers.

In a flashback, Mika recalls an undernourished seraph child held in a fluid-filled tank with a mask on the face to supply air. The child had feathered wings for arms.

1st Trumpet
No information.

2nd Trumpet
By using a certain drug, Guren unleashes the seraph characteristics within Yūichirō Hyakuya for a few minutes during the battle at Shinjuku. When the drug takes affect, Yu screams and loses his mind as he undergoes a painful transformation. His left eye turns dark and bleeds while a massive black wing-like structure sprouts from his upper right shoulder. Although extremely powerful, he goes berserk and attempts to kill any human nearby. He displays no interest in vampires and recognizes no one.

After ingesting three of the standard Japanese Imperial Demon Army supplements in chapter 33, Yu's internal organs rupture, including his heart. However, the power of the angels prevents Yu from dying. Asuramaru advises him that angels can be far nastier than demons. After this event, Yu loses more of his humanity and is implied to become proportionally more seraph in the process.

During the battle at the airport in Nagoya, Yu becomes desperate after Guren becomes possessed and Mirai transforms into the fifth trumpet to purge humanity. After fainting mid-sentence from his severe injuries Guren gives him, Yu take the trumpet within his mind and disregards Asuramaru's warning that this will erase the remainder of his humanity. Screaming, he sprouts two irregular black wings and is surrounded by a pillar of fire upon his transformation. Both of his sclera are dark. He flies freely in this form while cursing the tainted humans and planning to turn them into "pillars of salt." He can also make the earth rise up to defend him and can manifest a large sword. After appearing, he attacks the demon Abaddon and disrupts its manifestation.

One Demon Army soldier refers to the second trumpet as the "King of Salt."

Once the angel turns his attention to the humans, Asuramaru convinces Yu to become a full demon while Guren encourages the action from below. Horns appear, and Yu uses Asuramaru's blade to stab himself through the chest after he screams about saving his family.

Three months later, he remains a demon.

3rd Trumpet
No information.

4th Trumpet
No information.

5th Trumpet
On the way to Nagoya, Kureto Hiragi has Mirai Kimizuki injected with drugs to force her to transform. She screams and begs for death until two pairs of white feathered wings sprout from her back.

As the story progresses on, it is revealed that Kureto is planning to control an angel, which no one has ever successfully done before. According to Mahiru (who's possessing Guren at the moment), said that "blood is needed to control the angel." During the Nagoya Airport experiment, Kureto and Guren/Mahiru use the blood of humans, vampires, and demons to bind her and sacrifice many humans and vampires to control her after using Abaddon to possess her. This appears to be successful, but the 2nd trumpet awakens and destroys Abaddon's manifestation.

6th Trumpet
No information.

7th Trumpet
No information.

People Known to Possess the Seraph Gene

 * Yūichirō Amane (2nd Trumpet, King of Salt, Demon)
 * Awakens in an incomplete form for a few minutes after taking a special drug created by Guren in Vampire Reign chapter 13. Shinoa's embrace returns him to his human form, but he remains in a coma for a week afterward and does not recall the transformation.
 * In Vampire Reign chapter 34, Asuramaru informs Yu that he is even less human than before after he fatally overdoses on the Demon Army drugs and has his life maintained by the power of angels.
 * Completely awakens as the 2nd trumpet and King of Salt after erasing the rest of his humanity in Vampire Reign chapter 41. In the same chapter, he becomes a full demon in order to suppress the angel's power.
 * Mikaela Shindō (Vampire)
 * Shihō Kimizuki (Human)
 * Mirai Kimizuki (5th Trumpet, Angel of Destruction, possessed by Abaddon)
 * In Vampire Reign chapter 37, the Demon Army injects drugs into Mirai and makes her sprout two pairs of white wings while screaming in agony.
 * In Vampire Reign chapter 40, the Demon Army releases her onto the battlefield and then uses the demon Abaddon and their curses to bind and possess her.
 * In Vampire Reign chapter 41, the 2nd trumpet fully awakens and disrupts Abaddon's manifestation.
 * Yoichi Saotome (Human)
 * Tomoe Saotome (Human, Deceased)