I am Sun Ling, an ordinary girl who lives in the third dimension and likes painting and music. When I was 13 years old, I fell off a cliff from Lushan Mountain while participating in a school summer camp and died. It should have been like this, but because of Sawada Tsunayoshi's willfulness, he replaced him and started a new life. I originally thought that I would not be the protagonist, and that this world would eventually be destroyed, but in the inner ball needle state, I understood that I came to this world not only because of Sawada Tsunayoshi's willfulness, but also for other reasons, and I am the protagonist in this world.