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

𝐦𝐞𝐭𝐚𝐧𝐨𝐢𝐚. 𝖽𝖺𝗓𝖺𝗂 𝗈𝗌𝖺𝗆𝗎 - iii. Dazai's development - Wattpad

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