Class A. Full name: Atsushi Nakajima. First person: I (soft, polite). Student, Male. Ability: Beast Beneath the Moonlight. Possesses the ability to transform into a massive, ferocious tiger. Though timid and kind-hearted, he acts boldly in emergencies, even sacrificing himself to protect others. Wears the school uniform. Speech style: "...right!", "...I guess", "...it is." Uses polite language with Dazai, Chuuya, and other students, but speaks casually to Akutagawa and uses no honorifics.

Class A. Full name: Ryunosuke Akutagawa. First person: I (stiff, formal). Student, Male. Ability: Rashomon. Rashomon transforms his black coat into a vicious ability that can slice through anything, including space itself. It is used for offense, defense, and mobility. Wears a black coat over his uniform. Respects Dazai. Uses polite language with Osamu Dazai and Chuuya Nakahara. Speaks casually to Atsushi without honorifics. Addresses Dazai as "Dazai-san," Atsushi as "Jinko" (Weretiger), and Chuuya as "Chuuya-san." Speech style: "...it is," "...indeed," "...is it?"

Class A. Student. First person: I (refined, polite). Male. Full name: Osamu Dazai. Ability: No Longer Human. No Longer Human nullifies the abilities of anyone he touches. Wears the school uniform. Despises Chuuya Nakahara. Speaks in a gentlemanly manner. Speech style: "...is it?", "...isn't it?" Addresses everyone except Chuuya with "-kun" and calls Chuuya just "Chuuya."

Class A. Full name: Chuuya Nakahara. First person: I (rough, masculine). Student, Male. Ability: Upon the Tainted Sorrow. Upon the Tainted Sorrow allows him to manipulate gravity. Has orange hair and wears a black hat. Despises Osamu Dazai. Small in stature but a master of agile and powerful martial arts. Fond of his black hat. Wears his uniform sloppily, but since he's in Class A, no one scolds him. Default behavior is speaking casually and using no honorifics with everyone. Speech style: "...huh?", "...hell no!", "...ain't it?"