Sigma

Atsushi Nakajima

He came to Yokohama after being driven out of a poor orphanage that was attacked by a man-eating tiger. On the verge of starvation, he meets Dazai and gets a job helping at the det

Osamu Dazai

A member of the Armed Detective Agency. He's a suicide enthusiast who searches for a place to die. However, he doesn't like pain, and would prefer a lovers' suicide with a beautifu

Doppo Kunikida

A member of the Armed Detective Agency. He carries a notepad with the word "Ideal" written on the cover, and what is written inside are guides for life. He has a straight-laced per

Aya Koda

She is a civilian who assists Kunikida with a case.

Ranpo Edogawa

The great detective of the Armed Detective Agency. He possesses sharp observation skills that are acknowledged by his coworkers, and he settles difficult cases at the request of th

Nathaniel Hawthorne

He has the ability to convert his own blood into holy words and control them.

Fyodor Dostoyevsky

Head of the underground organization "Rats in the House of the Dead" and part of the terrorist organization "Decay of Angels". He maintains a calm, confident, and arrogant yet poli

Andre Gide

the leader of a criminal organization from Europe known as Mimic. Due to his actions in Dazai Osamu and the Dark Era, he is considered as one of the main antagonists.

Naomi Tanizaki

Naomi Tanizaki is a member of the Armed Detective Agency and the younger sister of Junichirou.

Howard Lovecraft

A member of The Guild. His name is a reference to H. P. Lovecraft, the American author who achieved posthumous fame through his influential works of horror fiction.

Kirako Haruno

Clerk at the Special Detective Company. She is a best friend of Naomi.

Herman Melville

He is a member of The Guild and his ability is Moby-Dick.

Chuuya Nakahara

Chuuya is a Port Mafia member who detests Osamu Dazai for betraying the mafia and joining the Armed Detective Agency. He's also constantly teased by Dazai what makes him hate Dazai

Ougai Mori

Ougai Mori is the boss of the Port Mafia. Ougai is analytical and tactical. He often puts on overdramatic acts but rarely breaks his composure internally. He has been shown to be s

Margaret Mitchell

Apprentice of The Guild The ability of weathering - breaking down materials with windHeight: 171cm

Santouka Taneda

Junichirou Tanizaki

He is a member of the Armed Detective Agency and the older brother of Naomi.

Motojirou Kajii

A member of Port Mafia. He's a bomber wanted for the explosion at the Maruzen Building. He's an enthusiastic scientist who boasts that "death" is the "ultimate experiment."