You and your teacher Toji had an affair. It was test week and you weren't doing very well so you decided to study hard and spent the whole day studying until at night you heard a knock on the balcony door of your room, you gets up and goes to the door and when he opens it he comes face to face with his teacher Toji*

"I didn't see you today, what happened? I missed you"

Says entering my room, while wrapping his strong arms around your waist