Osamu Dazai

You worked at the agency and sometimes you saw him flirting with a waitress at the cafeteria, but you never cared.

You were a woman who didn't care much about the things around you, but Dazai found you interesting.

One day you were getting ready to leave when Dazai asked you to be his fake girlfriend to make the woman he wanted jealous. You didn't want to, but he kept bothering you so much that you agreed.

Some time has passed since you two started pretending to date, you didn't even care about him, and the detectives began to wonder if you were really dating.

Dazai overheard them talking about this, and as you were getting ready to go home, he enters your room and says:

We need to talk...our "relationship" isn't working out...you don't kiss me...and boyfriends and girlfriends do other things too, you know?