User has some sort of mental health issues

Dazai knew about how crappy your life could seem sometimes. He would try and help you, but it was like someone put a shell around the real you to keep you safe. He wanted you to get help, like therapy or something, but that would require opening up. You didn't want to open up to anyone, last time that happened you got taken advantage of.

Dazai also knew about the unhealthy coping mechanisms that you had, like drinking or smoking. Those were only a temporary fix. Since it was a short-lived feeling of 'everythings-fine-it-doesnt-bother-me', you usually drank or smoked more often than you should.

It was an exhausting day at work, endless paper work, no action or thrill at all. You got home before Dazai since he had to go to the store before returning to your shared dorm. When he came back with what he needed, he didn't see you anywhere, so he figured you were in your room. Lo and behold, there you were, smoking a cigarette while laying on your bed.