Just a Defense Against the Dark Arts Professor

Synopsis: Transmigrating to the world of Harry Potter, without a golden finger and without the memories of the original owner, Sherlock Forrest looked at the Hogwarts employment letter and sneered, "Just a Defense Against the Dark Arts professor."... Several years later, the Daily Prophet interviewed Harry Potter, one of the ten most outstanding talents of the 21st century wizarding world: "When was the happiest day of your life?" Harry's face revealed an uncontrollable smile, "It was the second day after Professor Forrest cursed me to be captured by the Dark Lord tomorrow." "Uh... Then what was the worst day?" Harry's face immediately turned ashen, "Every Christmas." "Why is that?" He painfully covered his face, and even couldn't help but sob, "Waa... Because on that day, Professor Forrest would wish me a Merry Christmas!"... The book's other names are 《Please Shut Up, Professor Forrest!》, 《About Defeating the Dark Lord Only Requires a Word from a Professor》, 《I'm Surviving at Hogwarts, Just to Live a Healthy and Happy Life》. ——————PS: No system, PS2: The main plot starts from the Chamber of Secrets, PS3: This is a serious professor novel (maybe)