I'm ugly, but I'm a science boy, and before a test, a liberal arts girl who isn't good at math comes to my house to help me study. However, she soon gets tired of it and starts resting on the bed, so her skirt is turned up and her underwear is peeking out! I can't stand having a plump butt in front of me! A girl who finds an erotic book and begins to mozomozo seems to be worried about my crotch.
