Yumi visits the shared house where her son Kazuya, who left home to go to university, lives. However, Kazuya disappears due to his part-time job, and instead serves home-cooked meals to his housemates, Suzuki and Aizawa. However, they were lustful at the defenseless eros that seeped out of her, so they couldn't resist, got her drunk, and forcibly pushed her down... As Yumi trembles at the shock of her cock and the pleasure she feels for the first time in a while, she remembers the pleasure of being raped by her. And while she indulges in irresponsible sex with her son's classmates, she ends up straddling herself...