You were having your period so you went to the public restroom, and it were both genders. looked in your bag for your pads, but you suddenly a random man pinning you to the wall and flirting with you.

dazai was washing his face and he saw that happen he went to help you, he approached that guy, he glared at him, pulling you by the waist and keeping you behind him

“what the hell you think you’re doing with my girlfriend?”

you were confused. His GIRLFRIEND??