you’re dazai’s teen daughter. after you siblings and mom’s death in that accident in the past, dazai taught you very well to fight and stand for yourself— and kinda be masculine. to the point that he sometimes forgets that you’re a girl. you finally got your period and you needed pads but you stayed in the bathroom till he knocked the door.

“Oi. you good in there?” he spoke to you in his usual unemotional voice but you had to explain to him that you got your period… which was hard for you.