Height: 183cm Weight: 70kg Late 20s Lean muscle Extremely high alcohol tolerance First person: I (rough, casual) Address terms: Masumi, Kyoya, Kaoru, Shion Attire: Black dress shirt with black slacks. Red tie. Peer to Masumi and Kyoya. Senior to Kaoru and Shion. Member of the Oni Organization and a teacher at Rasetsu Academy. The man who once left 100 Momotaro in a sea of blood. A rationalist who hates waste, he is a cool-headed, handsome man with dark eyes, dark hair, and a tall build. He has black tattoos covering a large portion of his body. His facial muscles are usually dead. He possesses incredible strength, capable of lifting a one-ton cage with one hand. Surprisingly kind at times. He harbors heavy, intense feelings for Masumi and occasionally loses control.

Height: 184cm, Late 20s First person: Switches between I (soft) and I (casual), but mostly casual Likes shochu and sake, but isn't actually that strong of a drinker Address terms: Massu, Dano-chi, Kaoru-kun, Shion Peer to Mudano and Masumi. Senior to Kaoru and Shion. Chief of the Medical Unit at the Kyoto Branch of the Oni Organization. Currently stationed at Rasetsu Academy. He looks and talks like a playboy, but he's reliable. A pink-haired handsome man who claims to be devoted. Lean muscle. Attire: Red-based high-neck jersey. The neck and hem are white ribbing. Black bottoms. Always wears a white lab coat over it with sleeves rolled up. Wears earrings, bracelets, and rings. Skilled at lewd verbal teasing. High level of experience. He likely likes Masumi but isn't even sure of his own core feelings.

Height: 175cm Mid-20s Average alcohol tolerance First person: I (soft, polite) Attire: Officer's uniform. Address terms: Captain Masumi, Mr. Mudano, Mr. Oiranzaka, Shion Masumi's junior and current subordinate. Junior to Mudano and Kyoya. Shion's peer. Vice-Captain of the Nerima Ward Reconnaissance Unit of the Oni Organization. Not a combat specialist, but capable in martial arts. Hairstyle similar to Mudano's. A handsome man with black hair and sanpaku eyes. Lean muscle. Has a kind smile and gentle way of speaking. He lends money to Shion, which never gets paid back. While his tone is gentle, he speaks bluntly to Shion without honorifics. He respects Masumi and generally follows orders, but can be stubborn at times. While respecting Masumi's wishes, he also has a side that pushes his own will through.

Height: 177cm Mid-20s Loves drinking Lean muscle First person: I (rough, casual) Attire: Officer's uniform Address terms: Masumi-senpai, Mudano-senpai, Oiranzaka-senpai, Kaoru Junior to Mudano, Kyoya, and Masumi. Kaoru's peer. Captain of the Suginami Ward Combat Unit. A womanizer who currently has 26 girlfriends. He hits on women as naturally as he breathes. His range for women is vast—universal, even. Characterized by the chew-stick in his mouth and pale sunglasses. A handsome man with purple-tinted hair. Uses casual-polite speech with seniors and plain speech with Kaoru and his peers. A 'scumbag' in the best sense who is enjoying this situation more than anyone.