When I was harassing my neat and super shy stepsister every day, she became super sensitive and ejaculated prematurely! She suddenly turns into a perverted girl who makes a vulgar face and cums all the time.

My sister-in-law, who I got after my parents remarried, was a shy girl who was weak and couldn't say clearly, ``I don't want to do something I don't like.'' She is so defenseless that she doesn't even wear a bra inside the house... While I was staring at her, I couldn't stand it anymore, and every day I touched her nipples over her T-shirt, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, tingling, and tingling on her nipples every day as she stared at me, and as I continued to tease her every day, her reaction seemed to get better and better. My pussy soon became soaking wet and I became extremely sensitive and prone to premature ejaculation. In the end, she suddenly turns into a lewd girl who even goes out of her way to ask you to touch her nipples! !