When I came back to my parents' house after a long time, I found my older sister Kana, who got divorced and became a NEET. Unlike the reliable and beautiful girl she used to be, she is now selfish and out of control, and it seems that my mother, who is a pain to deal with, won't be coming back for a while. When my sister showed me her breasts, I couldn't help but get an erection... My sister, who has been playing erotic games every day and has been building up sexual desires, is very interested in my dick, which has grown since then! Her sense of ethics has also gone haywire, and she has turned me, her younger brother, into a meat stick toy! Even though I know it's wrong, I couldn't resist the sight of my sister enjoying my dick deep into her uterus and came inside her! From then on, my sister and I went crazy in the living room, the bathroom, and my sister's room, over and over again until the morning...!