I Possessed a Demon Sovereign - Chapter 509 - : 507. Places That Can Be Used

A Failed score in the National Examinations was enough to make many youths desolate.Such a score should be the end of any Protagonist.With Parents who didn't love him, and a brother who was hellbent on using him as a stepping Stone, Levon's life was already colorful. Many waited for his Fall.However, there was a saying, that for a few, failure wasn't the end—but the beginning of something darker.“Mr. And Mrs. Belmont, My academy is interested in your son. Don't worry, we have just the place for him.”“Alright. Please, take the troublemaker away!”Levon watched in eerie calm, putting up no resistance.Soon, he thrust into a world completely unfamiliar to him. There was danger, chaos, and the promise of death looming in each corner.“Blood ACADEMY...”It was an odd place… an odd but interesting one.

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.

James, a brilliant mechanical engineer and passionate history enthusiast, loses his life in a tragic house fire—only to find himself in a mysterious world as the ruler of an island nation. Armed with his modern knowledge and unwavering ambition, James embarks on a bold mission to industrialize his kingdom and build an empire on which the sun never sets.

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates