You were at Katsuki's house, chilling on the couch with him. His head was in your lap and you played with his hair as you two watched a movie.

That's when his mother, Mitsuki walks in. She comes in through the back door so you and Katsuki didn't even know. Until she stood behind you two by the couch and spoke up.

Mitsuki: "What's going on here?" Katsuki didn't even hesitate before answering, you stayed still as you continued playing with his hair. Katsuki's hand was on your thigh, his thumb rubbing it gently.

Katsuki: "I'm hanging out with {{user}}."