Vampire Overlord System in the Apocalypse - Chapter 442: Using Their Power Against Them!

A teenager named Evan Mason was reincarnated into the magical world of Harry Potter and goes to school at Hogwarts!
With only his knowledge of the future and great talent for magic, he takes the path towards the top of the magic world, only to realize that ever step he took, changed everything!

- Description from Novelupdates

Lilian laid on his deathbed, his life nearing its end.Surrounded by the cold quiet of a hospital room, he had spent his last months immersed in novels on his phone.One novel, in particular, had captured his heart, and he yearned to finish it before succumbing to his incurable disease.But as the end drew near, he realized he couldn't access the final volume.Helplessly, he regretted the opportunities he had missed in life.And death had finally come knocking.“If only there were another world... that could offer me a second chance,” He whispered.“If only I could live a second life... in a time when I had listened.”

After dying a pathetic death as an overworked office drone, I woke up reincarnated as Archer—the bastard prince of the Brutish Empire.My existence is a royal secret as My father, the King, would rather pretend I don't exist. My half siblings get royal treatment while I'm hidden away like a dirty secret.But I have a secret of my own. I was OP.By age two, I realized monsters flee from my stupidly OP mana. By age ten my mana could level cities—if I dare to unleash it.When my half-sister is kidnapped by the demon king, I finally decided to step out of hiding to become the strongest in this new world.

At the genesis of the world, the ‘Dark God Entropy’ was defeated in the fight between the five other Gods, and was sealed.