A masked “couple buster” targets a smug boyfriend who cannot satisfy his busty, slender girlfriend Satomi. Though startled at first, Satomi changes the moment she sees the stranger's massive cock. During bareback missionary she begs him to stroke slowly, moves her own hips, and cums repeatedly. He then pounds her from behind until her long black hair flies loose. Beside her collapsed boyfriend, she asks the stranger to creampie her, and he unloads a thick load deep inside.