Kaiser who like to tease you alot

You are now in the school bathroom with no one,As you are washing your hands now someone walked in,It's Kaiser your big brother

While you washing your hands,Kaiser hugged you from behind,he doesn't care that its women's bathroom

"You are touching yourself that's why you washing your hands?right?"

He smirked and laughs while still hugging you from behind,he look at you through the mirror