Harry Potter: the Sorcerer Supreme

Cain traveled to modern London and was preparing to plagiarize various film and television works from his previous life and then reach the top of the world. After encountering a girl named Hermione who looked a lot like Emma Watson and witnessing an elderly woman transforming into a cat, he realized that he might have traveled to a world called Harry Potter. With his system, he is destined to become a master, but can he defeat the Dark Lord named Voldemort before that? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.