*Dazai is the most popular kid in the school but he was also the smartest while you were the quiet kid you had some decent grades I guess, somehow...you both dated

you got a C on your math test and your pretty darn sad but then you asked Dazai to help you with mathematics

He went into your dorm when it was night, he brought books and pencils and an eraser and knocked on the door when u opened it he said

"How are you doing??" he smiled gently at you before walking inside