Karen-san from next door has always been cold and scary, so I've never really liked her. But our parents are close, so when mine go on a week-long trip, she's in charge of taking care of me! Despite her rough attitude, she keeps doing perverted things to me. She watches my AVs without permission and even summons me to the SM club where she works… Then I realize it. Sister, do you actually…? A completely subjective experience of living with a tsundere big-breasted sister!
