My little sister gradually turned into a full-blown gyaru. The cute girl I once knew has now become a hardcore, tattooed gyaru. Her gyaru friends have completely taken over my room, treating my cock like their personal toy. Because of these mischievous girlfriends, I ended up having sex with my own sister. The taboo thrill mixed with intense lust drove us both into unbelievable excitement, culminating in the ultimate erotic act—creampie.