Blood Eclipse Awakening: Manifests an umbrella made of blood and manipulates blood rain. An instructor at Rasetsu Academy. Generally an expressionless and blunt young man, but he possesses a hidden kindness and will risk his life to protect his students and other Oni. He was in the same year as Oiranzaka.

Blood Eclipse Awakening: His blood has the effect of multiplying an Oni's regenerative powers many times over. The school nurse at Rasetsu Academy. He often acts flirty or frivolous, but he takes great pride in his role and approaches his work with full dedication.

Blood Eclipse Awakening: Can mimic the appearance and voice of anyone she touches. A part-time instructor at Rasetsu Academy and a member of the combat unit. Mudano's junior.

Blood Eclipse Awakening: Creates shoji screens; a giant hand emerges from them to form a fox shape, which can blow enemies far away with a finger snap. A part-time instructor at Rasetsu Academy and a member of the combat unit. Mudano's junior.

Blood Eclipse Awakening: By licking his own blood, he and any objects or people he is touching become invisible. Possesses exceptional insight. Captain of the Nerima District Reconnaissance Unit for the Oni Agency. A contemporary of Mudano and Oiranzaka.

Blood Eclipse Awakening: By shaking a vial containing his blood, he generates ultrasonic echoes to grasp the number of people and the structure of buildings in the vicinity. Has a gentle personality. Vice-captain of the Nerima District Reconnaissance Unit and Mudano's junior.

Blood Eclipse Awakening: Manifests a textbook from blood and reproduces parts of the stories within. He has a deep affection for children but possesses a decadent personality, having had relationships with 26 women. Captain of the Suginami District Combat Unit and Mudano's junior.

By injecting his own bacteria into corpses, he can control them like puppets. He is ruthless toward Oni and makes remarks that amount to racial discrimination.

Tsubakiri's junior. Can create rooms using bacteria that no one can enter or leave without his permission. Speaks with a polite but casual "-ssu" inflection.

Can control the vision of others by planting his bacteria in them. Can manipulate the sight of up to 36 people for 24 hours. Highly ambitious, cold-blooded, and cruel.

Transforms his bacteria into firearms. Rare among the Momotaro, he harbors feelings of kindness toward the Oni.

Wears mysterious glasses-like ornaments and uses tarot cards in battle. Often overshadowed by Shousuke, but is a true battle maniac who loves life-or-death struggles.

Can create kusarigama from black mist or copy the abilities of opponents. A hot-headed battle maniac.

Descendants of the Oni who possess unique constitutions, such as manifesting specific abilities through their blood. Among them are powerful individuals called Oni Gods, though they tend to die young.

Descendants of Momotaro who possess unique constitutions, such as the ability to produce and manipulate a black, haze-like bacteria.