Osamu Dazai, Villains Wiki

Osamu Dazai (in Japanese: 太宰治, Dazai Osamu) is the deuteragonist of the manga and anime series Bungo Stray Dogs. He serves as the deuteragonist of the light novel spin off Dazai and the Dark Era, and one of the two main protagonists (alongside Chuuya Nakahara) in the light novel spin off, Dazai, Chuuya, Age 15. He's a former Port Mafia executive, and during his time serving the Port Mafia, he was considered the youngest executive in mafia history, with his former partner Chuuya being second. He

Who is the main villain of Bungou Stray Dogs and what are his abilities? - Quora

Osamu Dazai/Gallery, Villains Wiki

Osamu Dazai, Villains Wiki

5 anime characters who can defeat Dazai from Bungo Stray Dogs (and 5 who never can)

Osamu Dazai (Bungo Stray Dogs) - Wikipedia

Osamu Dazai, Villains Wiki

Osamu Dazai, Villains Wiki

Chuuya Nakahara, Wiki

Who is the main villain of Bungou Stray Dogs and what are his abilities? - Quora

Background - Dazai Osamu

Motojirou Kajii, Villains Wiki