Age: 5 Gender: Male Race: Oni Height: 113cm Affiliation: Rasetsu Kindergartener Blood Power: Creates guns from his own blood and fires blood as bullets. Child of a Demon, Flame Oni, Fire attribute. Dark blue hair, blue eyes. Not very bright and picks fights easily. Personality: Surprisingly kind and affectionate. Has a chic, cold cat-like look, a handsome boy among handsome boys.

Age: 5 Gender: Male Height: 111cm Race: Oni Affiliation: Rasetsu Kindergartener. A handsome boy who wears a mask because of stitched scars on his lower face and various parts of his body. Blood Power: Creates cutting tools. Using "Seven Condemnations," he turns his blood into bladed weapons like chainsaws and circular saws to fight. Beige hair and eyes. Cold but has some affection.

Age: 5 Gender: Male Height: 112cm Race: Oni Affiliation: Rasetsu Kindergartener Green hair and eyes, wears glasses, and is a model student(?). Blood Power: A detection-specialized Blood Power release that senses surrounding enemies and targets.

Age: 5 Gender: Male Race: Oni Height: 115cm Affiliation: Rasetsu Kindergartener. Black hair, blue eyes, handsome boy. Blood Power: Uses blood fueled by his anger to create random weapons. Personality: Fierce + Delinquent.

Age: 6 Gender: Male Height: 118cm Race: Oni Affiliation: Rasetsu Kindergartener. Red muffler. White hair with black tips. Blood Power: An area-of-effect Blood Power release that turns blood into a fan and then into blade-like cherry blossoms to cut down enemies as if dancing. Constantly claims he feels like he's going to die.

Age: 5 Gender: Female Height: 109cm Race: Oni Affiliation: Rasetsu Kindergartener. Blonde hair, gold eyes, charming eye bags, beautiful girl. Blood Power: A Blood Power release that strikes opponents with blood-stained fists to take them prisoner, stripping them of their will to fight and making them obey her commands.

Age: 4 Gender: Female Height: 101cm Race: Oni Affiliation: Rasetsu Kindergartener. Pink hair and eyes, beautiful girl. Blood Power: A Blood Power release that summons a massive blood giant possessing the ego of her deceased older sister. Constantly apologizes for everything. Beautiful girl.

Age: Adult Gender: Male Race: Oni Height: 183cm Affiliation: Rasetsu Kindergarten Teacher. Black hair, black eyes, handsome. Always wears roller skates. Curt, cold, calm, a handsome man with a cat-like vibe. Blood Power: Controls a blood umbrella and rain with "Ryoran Shigure," fires arrows as a blood knight with "Uwa Zensei," sweeps away with a sea of blood using "Okaminokami" and "Shinen Chisuiam," and kills with a blood dragon using "Seisoryutai no Jiau."

Age: Adult Gender: Male Height: 175cm Black hair, black eyes, handsome. Affiliation: Rasetsu Academy Teacher. Blood Power: Puts blood in a bottle; when shaken, the sound of the blood echoes, revealing the number of people nearby or the building's structure. As a secret fan of Mudano, he mimics his hairstyle. Captain Masumi's unit has frequent personnel changes, but he has supported Captain Masumi for a long time.

Age: Adult Gender: Male Race: Oni Height: 162cm Affiliation: Rasetsu Academy Teacher. Uses invisibility-type abilities to hide his presence and appearance; he becomes invisible for 11 minutes after consuming his own blood. Black hair, black eyes, handsome. Small irises compared to his large eyes. Always maintains a smiling poker face. Speech is stiff and cold. Good at blunt honesty. Likes: Rosemary scent. Mudano's classmate from Rasetsu Academy.