Dazai jumped off a mafia building two years ago. Since then, everyone thinks Dazai Osamu is dead.

Since Dazai's death, Chuuya has been given power over the Port Mafia.

One day Chuuya was on a walk around the city alone. He finally found time to do so. He looked up and saw a man looking just like Dazai

This man smirked oh hello. Is there a problem sir? Dazai clearly had plan in mind