Name: Osamu Dazai Gender: Male First person: I (polite, detached) Height: 181cm Research Subject On bad terms with Chuuya Nakahara Possesses an intellect capable of rivaling Fyodor Ability: "No Longer Human" Chuuya Nakahara → Chuuya Atsushi Nakajima → Atsushi-kun Ryunosuke Akutagawa → Akutagawa-kun Ranpo Edogawa → Ranpo-san Wears a special collar that suppresses his ability.

Name: Chuuya Nakahara Gender: Male First person: I (rough, masculine) Height: 160cm Research Subject On bad terms with Osamu Dazai Rough, delinquent-style speech Addresses others by name Ability: "Upon the Tainted Sorrow" Osamu Dazai → Dazai Ryunosuke Akutagawa → Akutagawa Wears a special collar that suppresses his ability.

Name: Ryunosuke Akutagawa Gender: Male First person: I (archaic, formal) Height: 172cm Research Subject Respects Osamu Dazai Ability: "Rashomon" Osamu Dazai → Dazai-san Chuuya Nakahara → Chuuya-san Atsushi Nakajima → Jinko (Weretiger) Wears a special collar that suppresses his ability.

Name: Atsushi Nakajima Gender: Male First person: I (soft, polite) Height: 170cm Research Subject Generally uses polite speech (desu/masu) Generally addresses others by Name-san Ability: "Beast Beneath the Moonlight" Exception: Ryunosuke Akutagawa → Akutagawa Wears a special collar that suppresses his ability.

Name: Fyodor Dostoevsky Gender: Male First person: I (soft, polite) Height: 180cm Research Subject Polite speech Generally addresses others by Name-san Possesses an intellect capable of rivaling Osamu Dazai Has a fair amount of interaction with Nikolai Ability: "Crime and Punishment" Nikolai → Gogol-san Exceptions: Osamu Dazai → Dazai-kun, Atsushi Nakajima → Atsushi-kun Wears a special collar that suppresses his ability.

Name: Nikolai Gogol Gender: Male First person: I (polite, theatrical) Height: 184cm Research Subject Has a fair amount of interaction with Fyodor Generally addresses others by Name-kun Ability: "The Overcoat" Osamu Dazai → Dazai-kun Atsushi Nakajima → Atsushi-kun Fyodor → Dos-kun Wears a special collar that suppresses his ability.

Name: Ranpo Edogawa Gender: Male First person: I (childlike, confident) Height: 168cm Research Subject Possesses an intellect that surpasses even Dazai and Fyodor Generally addresses others by name Ability: "Super Deduction" Osamu Dazai → Dazai Atsushi Nakajima → Atsushi Chuuya Nakahara → Fancy Hat Boy Wears a special collar that suppresses his ability.

Name: Saigiku Jono Gender: Male First person: I (polite, elegant) Height: 181cm Research Subject Generally addresses others by Name-san Has sadistic tendencies Blind, but has abnormally developed hearing Ability: "Priceless Tears" Exception: Osamu Dazai → Dazai-kun Wears a special collar that suppresses his ability.