The Hitomi sister next door has been cold and distant since forever, and I've always found her a bit intimidating. But since our parents are close, mine asked hers to take care of me for the week they're on vacation! Despite her rough demeanor, she's actively coming onto me! She watches my AVs without asking, barges into the bathroom in her swimwear... And then it hits me. Does sister actually...? Experience life with the tsundere big-breasted Hitomi sister living together, all from a first-person perspective!
