Searching a manga

Ummm... There's this manga I really want to read but I can't remember the title, it's about a girl that was raped and then she becomes a hikikomori so her best friend tries to make her overcome her traumatism, he tries to improve her mood with jokes but the problem is that he doesn't have any sense of humor and he isn't funny so he learns to be funny for her.

It isn't a yaoi or a Yuri, I don't think it's very recent.