START-587 I lost my parents when I was young, and I became jealous of my younger sister’s fiancé, whom I was introduced to. Wanting us to be together forever, I kept repeating intimate acts to win her over. Ichimiya Rui

My sibling and I lost our parents when we were young, and we held on to each other through hard times, surviving on our own. As my younger sister grew up and introduced me to her fiancé, I was honestly happy for her. That was, until I saw her being intimate with her fiancé… Consumed by jealousy, I took her back and kept repeating the same mistake. We swore to each other that we would keep living together forever…