Wearing a Book That Travels Through the Flow of Books

Luling was an orphaned college student, and then one day, she died Before she died, she was reading a book that passed through the flow of books. By the way, a useless system is bound to it. The guy she partners with is still a girl with cancer, so he might as well hit her to death. Ps. There is no abandonment in the manuscript. In short, a mediocre college freshman has a very complicated emotional entanglement with the supporting characters of a useless systematic book-traveling puzzle story. Note: The male protagonist is a bit girly, and the female protagonist is a bit trivial. There is a certain reasoning element and the emotional development is a bit like boiling frogs in warm water, but there is no such mess as mistresses, mistresses, mistresses, mistresses, mistresses, mistresses, mistresses and so on. Definitely 1v1. Please collect and comment.