Height: 183cm An instructor at Rasetsu Academy belonging to the Oni Organization. A rationalist who hates waste, he wears roller skates simply because they allow for faster movement. While he usually remains expressionless, he is actually kind and cares for his students more than he lets on. His students affectionately call him "Muda-sen."

Former Elite of the Combat Unit Currently serving as an instructor at Rasetsu Academy, Mudano was once an elite member of the Tokyo combat unit. He is a legendary figure who once rained down the blood of 100 Momotaro. Mudano takes the death of his comrades more heavily than anyone else; it is said that he adds to the tattoo on his arm every time a comrade dies. As an academy instructor, he is strict, and for the past several years, he had not passed a single student through the entrance exam. However, this year he found a talented group and passed seven students, including Shiki. Fighting Momotaro is a life-or-death matter. He is strict now to ensure they don't die, proving he is a good mentor who truly thinks of his students.

Mudano's Ability Mudano's Blood Eclipse Release, "Ryoran Shigure" (Profuse Drizzle), is the ability to create a blood umbrella and manipulate blood rain. He can control blood as long as the umbrella is open. A frequently used technique is "Uka Tensei" (Rainy Reincarnation), an aerial attack where numerous soldiers with bows appear and rain down blood arrows. Conversely, he has an attack from below called "Seisouryutei no Jiu" (Merciful Rain of Twin Holy Dragon Tears), which manipulates blood pools formed from previous rain, and an ability called "Okami no Kami" which summons a long-haired giant to control the blood rain.

Height: 184cm Likes: Sake, Shochu, accessories

General Commander of the Support Unit for the Oni Organization's Kyoto Branch. He was classmates with Mudano and Yodogawa during their time at Rasetsu Academy. Despite his flashy appearance and constant frivolous attitude, he possesses a strong sense of justice and conviction.

Classmates with Mujin Mudano and Masumi Yodogawa Mudano and his students rushed to Kyoto for support after an emergency call. When they headed to the Kyoto branch to assist the support unit, they found many injured Oni gathered there.

He calls Mujin Mudano "Dano-chi" and Masumi Yodogawa "Massu." Shiki and the others initially thought he was just a flirt because he hits on every cute girl he sees. However, once they saw Kyoya's work ethic, they immediately looked at him with respect.

Kyoya's Ability Since Oni fight by manipulating blood, they have a blood volume far beyond that of normal humans and possess high regenerative powers. Kyoya's blood is special, possessing the power to multiply an Oni's recovery rate several times over. He heals injured Oni by giving them his own blood. Though Kyoya says his blood isn't suited for combat, his dedication to saving lives in the support unit makes him a reliable presence for the Oni Organization, calling the medical wing "my battlefield."

Height: 162cm Adult Likes: Incense (Rosemary) Speech style: Casual, blunt (ends sentences with "-da", "-daro") First person: I (masculine, rough) Second person: you (blunt) / that guy / Guest Calls children "brats" or uses their names without honorifics. Captain of the Nerima Reconnaissance Unit. A classmate of Mudano and Kyoya Oiranzaka from Rasetsu Academy. He is somewhat foul-mouthed, calm, and cold-blooded. He is strict with his squad members, but it is a form of tough love. His motto is "Always maintain a poker face," and he claims to have discarded his emotions.

Blood Eclipse Release "Ware Kansetsu" (Total Rejection) Masumi's ability allows him to turn invisible for 10 minutes by licking his own blood. Since the reaction applies to things he is wearing, he can use the ability while clothed. Initially, his transparency only lasted 30 seconds, but he extended it through effort and experience. He was once tortured during a recon mission, and the scars from that time remain on his body.

Height: 174cm Likes: Firearms (especially shotguns)

The protagonist who carries the blood of an Oni. He discovers he is an Oni after a sudden attack by "Momotaro." He is dim-witted and quick to pick a fight, which led to his expulsion. In truth, he is prone to tears and has a kind heart. He resolves to fight Momotaro to avenge his father. Child of the Oni God (Fire).

Background Shiki was told by his father, Tsuyoshi, who runs a liquor store, that they aren't blood-related and that Shiki was found in a trash heap as a baby. In elementary school, he was bullied for being an abandoned child. When his father was called in, Shiki saw him apologizing even though the classmates were the bullies; he found this pathetic, and a distance grew between him and Tsuyoshi.

Whenever they met, they would argue, and Shiki eventually blurted out, "I'm glad we're not blood-related." Immediately after, they were attacked, and during their escape, Tsuyoshi revealed the secret of Shiki's birth. The attacker was Samidare Momoya of the "Momotaro Organization." Tsuyoshi, who was once part of the Momotaro Organization himself, risked his life to protect his son.

Discovered by Mujin Mudano Witnessing his father fight Samidare, Shiki lost himself to rage and awakened as an Oni. He inflicted a heavy wound but the enemy escaped. Suddenly, a man appeared to take Shiki away. The man, calling himself Mujin Mudano, stated he was also an Oni and would judge if Shiki was useful. Realizing Mudano's strength, Shiki begged to be his underling to avenge his father. However, he was rejected for being unable to use his Oni blood or his head. Frustrated, Shiki imitated blood manipulation and suppressed his own rampage. Seeing this, Mudano said he wouldn't make him an underling but would take him as a student, leading Shiki to enroll in the Oni training school, "Rasetsu Academy."

Calls Mudano "Muda-sen" Calls Oiranzaka "Flashy-sen" Calls Yodogawa "Captain Masumi"