My idol is actually my younger sister?!? What I thought was good luck turns out to be a tsundere, super-carnivorous girl being used as a sex toy in our cohabitation! Tsukimi Wakaba MGOLD-025

My idol. A beautiful girl with an angelic smile, Wakaba, who was known as the only one of her kind in 1000 years. After her parents remarried, Wakaba became my younger sister… Although I was happy, she was always arrogant and aloof at home, shattering my ideal. However, one day I accidentally saw Wakaba masturbating, and from that day on, I began a life of sexual desire to replace my idol…