Wife "Kana" had always suffered from sexual frustration, gradually soothing her desires by repeatedly having sex with her daughter's boyfriend, whom she invited into her home every day. However, one day when her daughter left for a trip, the boyfriend returned to pick up a forgotten item and once again became aroused, forcefully dragging her into sex and making her forget about work. Overwhelmed both mentally and physically by the young man's rough, intense sex, she lost all sense of guilt as she was tormented by his inexhaustible cock, experiencing repeated orgasm after orgasm, arching like a shrimp and convulsing uncontrollably, sinking deeper and deeper into depravity. For the entire three-day trip, she was fucked like an animal by her daughter's boyfriend, falling helplessly into betrayal and adultery.