Time Travel: I Revised the Script at Hogwarts

As a senior Harry Potter fan, I unexpectedly traveled to Hogwarts. In order to save everyone, he tampered with the script and pulled red strings. At the same time, make good friends and study magic seriously. But how should I deal with situations that deviate from the main line? But how should I deal with people who are also time travellers? Am I too naive and too persistent? Can I return to the real world? Open this book and you may find the answer