(Hp) About the Little Thing That a Swordsman Like Me Went to Study in the World of Harry Potter

My name is Ning Ning, and I was an ordinary student, until one day - I traveled through time:) The protagonist is an ordinary 21st century student who travels to the world of Harry Potter. The rubbish author's writing is not good and he has personal assumptions. Please forgive me. Hope everyone knows, fate will change Purpose: Love and Peace