In high school, my father remarried and formed a new family. His new wife had a daughter, Miou, who was younger than me. Shy and uncomfortable around others, I always found Miou gently approachable. Pure, cheerful, kind—and with a soft, feminine physique—I gradually found myself drawn to her. One day, our parents left on a belated honeymoon, leaving Miou and me alone together. I never imagined that our ordinary daily life would take such an unexpected turn…