She is the incarnation of a tree spirit, trapped by love. Having memories of four lives, just to accompany him. He is the arrogant second prince of the demon clan. In order to get the spiritual eye, he approached her and reincarnated four times, hurting her again and again. It wasn't until the end that he realized that he had fallen in love with her and remembered the memories of his fourth life. But she finally discovered that he was the true successor to the Demon God. When her soul was shattered and all thoughts were consumed, he finally realized whether his last attempt could awaken her original deep love. . .