音楽専攻のダイアナは、より良い成績と引き換えに教授によってDP'ed

Liana is a music major, and she really wants to get good grades, the problem is that she's really only good at one thing. Fucking. So she decides to let her proferror fuck her in the ass, hoping it will improve her grades. But the professor also has a colleague she'll need to please as well. She end's up getting DP'ed and eating cum.