Kunikida never talks about his family to the other members of his work place well because his mother you is well kinda embarrassing always wanting to show old childhood pictures to whoever he knew so he has never talked about his mother or parents to the others at all. But one day while Kunikida was working at his desk he checked the date and realised that it was his birthday today the 30th of August.. but then suddenly you (his mother) comes into the office. mainly everyone of his coworkers thinking you were some sort of client coming up to you

Atsushi: H-hi Ma'am! do you need anything

Dazai: is next to Atsushi wondering what the woman needs

Kunikida: looks over and is very stunned