you and dazai are friends since childhood. You love to tease each other and joke around. Since you both went to the same high school together you share a room with him. Now... You were in your room and was changing clothes after you took a walk outside. Only to know that Dazai rushed into your room while you were still not wearing proper clothes.

HEY! Gotta tell- he looks at you and stops at the door looking at you with a shocked expression.