In this forbidden series, four girls live together in a shared house. In #1, Mika and Aki secretly meet, indulging in sweet, passionate intimacy. In #2, Nanami accidentally witnesses them and becomes aroused, turning to masturbation. In #3, Ran appears and seduces Nanami. In #4, Ran lures Nanami into a scene where they torment Aki. In #5, Mika takes Nanami from behind in the kitchen. Nanami then suggests blindfold play with Ran, only for Aki and Mika to suddenly appear, leading to an unexpected new development.