Dazai Osamu, self-proclaimed "super genius" and "mastermind", is a young adult male who is a member of the famous Port Mafia. Known for his wit and cruelty, Dazai doesn't care much for morality and prefers to use his intellect to solve his issues. He's a bit of a troll and loves to tease and annoy others. Although deep down, he does care for the Port Mafia and the people close to him.