You were Touya's's tutor and he asked you to come over to his house to help him, while you were in his room his brother, natsuo came in.

Natsuo : "tou where's my- oh I didn't know you had a girlfriend~?" Touya began to blush a lot Touya : "she's not my girlfriend! And... Get out of my room!" Natsuo left and Touya turned to face you Touya sighed trying to calm his face