He relentlessly harassed his innocent and extremely introverted stepsister's nipples for days, resulting in her becoming hypersensitive and prone to premature ejaculation, experiencing constant orgasms! The leopard transformed into a perverted woman with lewd expressions and repeated climaxes. Aizawa Miyu ROYD-364

Because my parents remarried, I gained a super cute stepsister. This stepsister is a very introverted and timid girl. Taking advantage of her inability to clearly express her dislike, I relentlessly harassed her nipples! At first, I just poked her nipples through her clothes, then I persistently touched them every day. As a result, she became so sensitive that she drooled, and even orgasmed several times just from her nipples, completely transforming into a perverted girl! Eventually, she even started saying, "I want my brother to touch my nipples," growing into a mature high school girl who could express her opinions properly!