I Thought He Was King Arthur, but It Turned Out to Be HP

[No Heroine] [Multiverse] At first, he thought he was in Camelot during the Age of Gods. He worked hard to learn the Red Dragon Breathing Technique alongside his older brother, Kay. But when he was six, he was sent to London for primary school, where he met Hermione and discovered he was in the world of Harry Potter. At eleven, he received his letter from Hogwarts. He thought life would be uneventful, spent sparring wits with the plug goblins. But not long after starting school, he was forced into another Hogwarts, the politically correct edition... After that, there was no stopping him as he roamed the multiverse for fun. With powerful forces backing him, Nolan had no taboos. [World-hopping could be called a golden finger, or it could be called a world invasion] [He has a talent System that locks in maxed-out proficiency]