My sister always treated me with overprotective care. When I found out she had someone she liked, jealousy exploded inside me. I thought she saw me as nothing more than her little brother... Driven by possessiveness, I became the target of her nipple torture. "Since you have me as your older sister, you'll understand that you don't need a girlfriend," she said, dominating me with her big tits body. The nipple play grew increasingly intense, and before I knew it, I'd become dependent—unable to cum without her nipple stimulation. As her affection and control intertwined, I fell into permanent dependence on my sister's nipple torment.