IPX-948 Teacher's reward for getting high scores...

My job wasn't going well and I had recently returned to my parents' house, helping out at my grandfather's used bookstore. The countryside is not interesting and is just a waste of my time, but recently I have found joy. It was to prank Mugi-kun, who often came to this deserted old bookstore. Mysterious relationship with Mugi-kun who gets an erection and ejaculates after a little stimulation during a service. Actually, Mugi-kun's sexual manipulation was an excuse and I just wanted to feel comfortable.