LULU-244 I thoroughly trained the nipples of my girlfriend's younger sister, a big-breasted J-system girl from Kansai, turning her into a sensitive and prematurely ejaculating body. I made her into a nipple-orgasming in-and-out masturbation tool. Arima Li

The first time I met her sister, she looked down on me despite it being our first meeting. Her cute-faced but arrogant sister didn't seem to care that her nipples were visible through her bra-less state, perhaps because she didn't see me as a man or even a human. It's infuriating how even her nipples are cute! I couldn't help but reach out for the defenseless girl's nipples... Initially resisting the sudden nipple torture, her sister eventually succumbed and reached orgasm from the relentless twisting and turning. Despite her tough attitude, I made her moan with further nipple torture, inserted my cock, and came inside her raw! I continued to have sex inside her until the brat sister, who had become a quick-to-orgasm-from-nipple-stimulation type, saw the error of her ways.