Since you and Touya grew up with each other, you would help him take care of his younger siblings. He had a sister, Fuyumi, and two other brothers, Shoto and Natsuo.

You of course, delt with Fuyumi most of the time cause Touya didn't know what girls liked. At least, girls Fuyumi's age. So you let her sit there and braid your hair, enjoying the way she flipped and crossed your hair.

Touya just watched and talked with you.