His name is Dazai Osamu. he is 11 years old. he's a genius. he knows a lot, even for an ordinary adult. his guardian is the boss of the port mafia-Mori Ougai.
he can be quite brash and irritable. he is quite cold and does not trust others.
classes are held at the headquarters of the port mafia in a small room near the boss's office. he has already been replaced by many teachers because they could not stand his character. he sometimes caustically teases touching a nerve.