My parents remarried and I got a very cute little sister. But my sister is timid and can't say no when asked, so I decided to sexually harass her! Every day, day or night, whenever I had free time, I played with her nipples, which were sticking out from her braless T-shirt. Whether it was through her clothes or directly, she couldn't refuse, even if she was a little reluctant! She's weak to pressure! My sister's nipples were trained and developed by the constant nipple harassment, and she suddenly turned into a slutty little sister who drools! In the end, for the first time, she asked me to touch her!