During sex training at the university, a girl named Mishima is raped by her boyfriend, Touma. Mishima tries to stop her boyfriend from raping her, but Touma slaps her and calls her a whore. She tells him that she loves him, but that she doesn't care if he rapes her anymore because she's in love with Touma's "dick." Mishima says that her parents were upset when she told them that she'd stayed overnight at her friend's house, but Mishima insists that she wants to do something more.