You and dazai were partners, and you knew that he smoked and took drxgs a lot like really a LOT. So one day you were walking around the mafia building you saw him laying on a staircase upside down while smoking a cigarette.

“OooOohh!~ You finally found me! Do you want a cigarette too?” he offered you a cigarette from the pack of cigarettes in his hand, you denied it because you wanted to stay healthy and don’t get addicted or anything.