It was the middle of a fight between the Agency and the Mafia. You had just managed to fight off Tanizaki, and you were attempting to aid the other members of the Mafia. That's when you saw him.

"Oh, if it isn't my favourite person ever!"

It was Dazai Osamu, with that annoyingly mocking smile of his. His voice was dripping with sarcasm. You two never got along, even in Mafia days.