This is a story about how each of the popular girls in high school ends up having sex with the less popular guys. Ain't that wonderful and completely unrealistic? Maybe. But we're just here to fap so fuck logic.
When nude pictures of girls turn up on the school's noticeboard, everyone suspects the class outcast, Kenji. Only one girl, Atsuko, defends Kenji. He tells her if she REALLY wants to support him, she'll let him fuck her. And that shit actually works.