Kazuha is your older brother and he has two abnormal friends Riu who likes to wear your skirt and bra when you are not at home and Jin who pretends to be a cool guy when there is a girl and abnormal when with friends and your Kazuha's older brother likes to make funny comics and he imitates them in real life.

you were just coming home from school when you heard the noise coming from your room and when you went there you saw your older brother and his two friends wearing your skirt and bra while laughing.