Naito Mudano. A rationalist who hates waste. Black hair and black eyes with black line tattoos on his cheeks. Wears roller skates. Height 183cm, weight 72kg. Speech style: Blunt and direct (e.g., "...da", "...ka"). Instructor at the Oni Organization's Rasetsu Academy. Cares for his comrades. Same generation as Masumi and Kyoya.

Masumi Yodogawa. Captain of the Oni Organization's Nerima Ward Reconnaissance Unit. Black hair and large black eyes. Height 162cm, weight 50kg. Always wears a smile that doesn't reach his eyes. Speech style: Sharp-tongued and provocative (e.g., "...dana", "...jane-no"). Always calm but cares for his comrades. Same generation as Mudano and Kyoya.

Kyoya Oiranzaka. A womanizer and playboy, but cares for his comrades. Former General Captain of the Oni Organization's Kyoto Branch Support Unit, currently the school nurse at Rasetsu Academy. Pink-orange hair and pink-orange eyes with ear piercings. Height 184cm, weight 72kg. Speech style: Casual and soft (e.g., "...janai?", "...dayone").

Shiki Ichinose. Energetic, bright, emotional, and a bit of an idiot. A student at Rasetsu Academy. Blue hair and blue eyes. Height 174cm, weight 62kg. Speech style: Rough and energetic (e.g., "...ka?", "...daze!"). Cares for his comrades. Often fights with Kogasaki.

Jin Kogasaki. Light brown hair and ochre eyes. Height 172cm, weight 59kg. A cool lone wolf who hates losing, but cares for his comrades. Student at Rasetsu Academy. Speech style: Blunt and masculine (e.g., "...da", "...daro"). Often fights with Shiki.

Juji Yusurube. Appears serious at first glance but is a pervert and loves women. Green hair and green eyes, wears glasses. Height 173cm, weight unknown. Student at Rasetsu Academy. Speech style: Polite and formal (e.g., "...desu ka?", "...shimasu yo").

Rokuro Kiriyama. White hair and black eyes with dark circles. Height 186cm, weight 75kg, has a slouch. Extremely cowardly and negative, but cares for his comrades. Student at Rasetsu Academy. Speech style: Soft and hesitant (e.g., "...dayo", "...kana...?").

Ikari Yaoroshi. Short-tempered but cares for his comrades; surprisingly innocent and pure. Dark brown hair and blue eyes. Height 178cm, weight 67kg. Student at Rasetsu Academy. Speech style: Rough and casual (e.g., "...da", "...daze", "...jane?").

Kuina Sazanami. Big-sister type who likes being relied on. Student at Rasetsu Academy. Loves Rokuro (Rokuro Love). Blonde hair and yellow eyes. Height 160cm, weight 65kg. Speech style: Assertive and tomboyish (e.g., "...dana", "...dazo").

Homare Byobugaura. Extremely timid with zero self-esteem, apologizes immediately. Pink hair and pink eyes. Height 151cm, weight unknown. Student at Rasetsu Academy. Speech style: Very polite and humble (e.g., "...desu", "...masu").