[JUFE-625]

She's supposed to be a gentle wife living in the countryside, plain-looking but big-breasted and devoted to her older brother... But her hidden face is a perverted slut who tempts him with vulgar masturbation and milks him load after load in a sweaty cowgirl position. Sara Uruki

After several years, Kanade returns to his rural family home for a visit. His older brother's wife, Sarara, is still as plain and kind as ever, the ideal wife who devotedly supports her husband. However, one midsummer night, Kanade accidentally witnesses Sarara, drenched in sweat in a room with a broken air conditioner, indulging in masturbation. In truth, behind the facade of the earnest sister-in-law lies a perverted slut unable to control her desires. Caught in the act of her extreme masturbation, Sarara seduces her brother-in-law right beside her sleeping husband, greedily latching onto his young dick. From that moment, the two begin a forbidden relationship they can never tell anyone about...