my step-sister, who appeared to me when my parents remarried, was a timid girl who was weak-willed and couldn't clearly say "I don't like things I don't like". she was in a defenseless state, not even wearing a bra inside the house... while staring at her, i couldn't stand it anymore, so i poked her nipples through her t-shirt every day, tsuntsun tsuntsun... korikori korikori... taking advantage of the fact that she couldn't refuse to say it out loud, i teased her every day, and her reaction gradually improved. her pussy also got wet immediately, and she completely became a super sensitive premature ejaculation type. in the end, she transformed into a lewd woman who would even ask me to touch her nipples herself!!