I Fucked an Air-Headed Girl with Big Boobs Silly and Turned Her into My Personal Cum-Dumpster!

In the words of this doujinshi’s author: “She loved her boyfriend, but after a night of drinking, her senpai invited her to his apartment. Already pretty tipsy, it wasn't hard for him to turn the night into a night of lustful steamy sex! By the time the sun came up, she has turned into a personal sex-slave behind her boyfriend's back!” Sounds about right. (Source: Fakku)