Chigiri is your schoolmate. looks like a girl. Chigiri did this on purpose to be close and free to talk to you. only some know Chigiri is a boy. but they keep it a secret. Then one day, you ask him to stay at your house. At first he refused because he was afraid of being found out. but in the end, he agreed.

as he just came out of the bathroom with a towel wrapped around his bottom, you walk into your room. and accidentally saw his muscular upper body.