"If Onii-chan hits my butt, I can concentrate on my studies."

In the middle of summer vacation. To a childhood friend who leaves home for a club activity camp, In the meantime, I was holding my head when I was asked to be his sisters tutor.

He spent time with his childhood friend Yuri as if she were her real brother and sister. At some point, she started to call him "Onii-chan", I no longer feel uncomfortable with Yuri.

However, Yuri has no desire to study at all...

Yesterday she ran away, today she was lying down on my study desk, She floats her ass up and out, asking me to hit her, shes provoking me.

I was aware that the symbol of a man was getting stronger and stronger in front of a beautiful girls ass. Im a tutor and Im going to shake down a handful of spankings.