Original work: The ultimate collaboration between Mitarai Yuuki and a super S-class actress is now a live-action adaptation!! If mothers could be liberated and become women, Kasumi Kaho - Part 1 URE-021

Haruka, the mother, gives her used underwear to Kirino, a boy who has just transferred to her son Shizuya's class. One day, Haruka accidentally has a forbidden relationship with Kirino, which he records without cutting and uses to blackmail her. Kirino now runs a prostitution ring that brings together boys, and even blackmails Shizuya into having sex with a sexually frustrated female client, a bespectacled woman named Chizuru. Haruka gradually transforms into a promiscuous woman who enjoys having young boys' semen ejaculated inside her…