At an ordinary gathering after the college entrance examination, a mysterious girl appeared. Everyone except him claimed that she was a classmate. Is it because he lost his memory or did everyone else suffer from something strange? The testimonies and the photos used as evidence all point to the former... In the alley, a strange and cute girl opened and closed her petal-like lips, and spoke slowly and softly, as if singing a song, "Would you like to know what I am wearing under my T-shirt?" The fragrance of dove poison exuded in her voice, "You will live forever as a part of my body..." She slowly lifted the hem of her clothes with both anger and joy...