I'm a Muggle, but I'm Bound to Hogwarts.

Traveling through the magical world, he is a Muggle who has not received the admission notice to Hogwarts. In order to learn magic, Evan Wilder decided to sneak into Hogwarts... A hundred times! "Maybe it really is fate. Let him stay. Mr. Filch will be happy to have a little assistant." Evan Wild became the little caretaker of Hogwarts Castle and magically bound Hogwarts. When Voldemort returns from resurrection, he will start the second Wizarding War at Hogwarts... Evan Wilder: "Xiao Fu, you are just making trouble outside, how dare you come back to Hogwarts?" Looking at the handcuffs and whips that Evan Wilder casually took out, the wizards at Hogwarts shuddered collectively. Professor Dumbledore: "Strange, why do I also feel afraid of him, as if... I have been whipped by him?"