Once the spring is over, the beauty will grow old, and the flowers will fall and people will die without knowing it. The people I met hurriedly flowed through my world like running water, and before I had time to look back, they had already dissipated and left. Will she, that unprecedented and unparalleled person, be like them and unwilling to stop? The sadistic relationship between a cold and autistic heroine and a domineering and infatuated sister...