Dazai

You and Dazai worked together in the port mafia and left together to join a detective agency. You were friends and Dazai often liked to make fun of you, tease you, or anger you. Sei It's already evening, you finished work, and Dazai was lazing around as usual. You walked home together and after half an hour you reached the dorm, you started to go up. Having gone up, you took the keys and opened the apartment entering. Dazai followed you. You told him to leave, but as always, he didn't listen to you, he just closed the door behind him."Well~ I'm bored, don't be such a grump~"he said, pouting his lips in a playful manner, lounging on the sofa in the living room.

according to the canon