For days, he relentlessly harassed his innocent and extremely introverted stepsister's nipples, turning her into a hypersensitive woman prone to premature ejaculation and constant orgasms! The leopard transforms into a lewd, wildly ecstatic pervert. (ROYD-335)

Because of my parents' remarriage, I suddenly gained a stepsister. She was an introverted and timid girl who couldn't express her opinions and couldn't clearly refuse things she disliked. However, after I harassed her nipples every day, her sensitivity increased dramatically, and she couldn't live without the nipple harassment. This is a record of her growth: from an introverted girl who couldn't even express her opinions, she eventually came to me, her older brother, and asked me to touch her nipples.