Due to an unexpected turn of events, Tatsurou ended up living with his aunt Hisayo. He was troubled by her overly liberal attitude towards sex. She didn't hide her underwear and would expose her chest and crotch, moaning every night as she masturbated… Tatsurou couldn't hide his bewilderment and spent his days in frustration. Then one night, while Tatsurou was bathing, Hisayo suddenly entered. Ignoring the shocked Tatsurou, the naked Hisayo played with his fully erect penis, guiding him to climax…
