OBA-173 — I Am Gang-Raped By My Son's Classmate Every Day. Sayuri Ikuina

Sayuri lost her husband at an early age and is raising her son Takeo on her own. Takeo doesn't show any particularly noticeable rebellious phases, and Sayuri hopes that this modest lifestyle will continue forever... But one day, Takeo's classmate, Koji, comes to their house. Koji, who has been having trouble with Takeo over a woman, harbors an intense hatred for Takeo. Koji returns home that day without doing anything, but the next day he shows up at Sayuri's house with his bad friends...