Fair-skinned, slender Mai Shirakawa plays a cheating girlfriend whose boyfriend's best friend is secretly her ex. She strokes him with her foot beneath the table, then seizes the chance when her unsuspecting boyfriend showers, strips her ex, and sucks him off with powerful suction. After dinner she flashes him from behind the kitchen while her boyfriend sits nearby, then pulls him into the bedroom and pushes him onto the bed. She licks his balls, sucks his cock, begs him to eat her pussy, and stifles her moans as the former lovers have intense sex, using everything they still know about each other's bodies.