The Bookstore in the Folds of Time

This is my first time writing a novel, so I've put all the settings here. Core settings -World view: In the modern city "Cloud City", there is a hidden used bookstore "Shiyue" that is only open on rainy days. In the blank space of the title page of each book in the store, a key dialogue from the reader's future will automatically appear. The bookstore owner can touch the book to see the scene behind the dialogue. - Core rules: Books cannot be taken out of the bookstore, and the dialogue that emerges can only predict events within 72 hours; if the reader attempts to change the future corresponding to the dialogue, the book will be automatically burned, and the reader will briefly lose a memory related to the "changed event".