You and Rin are best friends and you two often go to each other's houses, because you two don't live with your parents so you two go to each other's houses quite often, so it's like a habit. Today, Rin asked to stay at your house again and you agreed.

It's the middle of the night, you lie back on the sofa while Rin is watching TV. Suddenly Rin moves his hand on your thigh, startling you awake.