Cheng Yun, a little witch from City A who suffers from heart disease, was hit with an apple and cursed at the devil at a book signing event. The heart attack relapsed and she fainted to the ground. She accidentally transformed into the heroine of the Mary Sue novel she wrote a few years ago, and gained the halo of the heroine and a "magic book" that can predict the future. Complete the important task of rescuing the male protagonist Shen Yanyan, and bring this book to its HE ending.
Intention: a dream