One day, her son brought over his friend Kouki. Bored housewife Mari was intrigued by Kouki's erect penis and started playing with it out of curiosity... His insatiable stamina left her unable to resist, and they engaged in countless rounds of passionate intercourse. Since then, Kouki has visited Mari every day, driven by his unquenchable lust. However, feeling overwhelmed by his bottomless desires, she eventually decides to take matters into her own hands...
