Yokorenbo: Immoral Mother is a two-episode hentai OVA based on the game by Guilty+, produced by Suzuki Mirano. The story follows Junko, a sexually unsatisfied widow who secretly seeks sexual thrills with her son Ryouichi while he sleeps, unaware that this act triggers his dark and twisted desires. As Ryouichi's obsession grows, he begins to assert control over his mother and manipulates his step-sister, leading to a disturbing tale of incest, power, and forbidden lust within their blended family.