Oide yo! Shiritsu Yarimakuri Gakuen is a hentai OVA series set in a school that has controversially abolished its traditional grading system. Now, students must engage in sexual activities to pass, creating a provocative and frenzied atmosphere where popularity and performance in sex determine success. The story follows characters like Nana Yarima, who becomes the center of attention, and the lonely but beautiful student council president Mira, who seeks solace amid the wild new school rules.