The main character perceives the world he finds himself in as a book! The author distorted the atmosphere of the story by making it Merry Sue for the main character

The plot of the book is pretty well written, but the grammar is terrible! The author changes various names, characters of the books, cities, countries, surnames, currencies, and names of sequences, from 2-3 and sometimes from 9-13 times, in several different sections I don't know! It is impossible to delve into this story. There are also catchphrases from China that ruined the atmosphere in the Book.