I Really Didn't Want to Increase My Favorability! - Chapter 165 - : The House Isn’t Big Enough.

The world of Nyil, with its monsters, its knights and its mildly sociopathic gods. Come and see! A soul flees and a soul arrives, blessed by luck. Will she survive? Will she thrive? Will she become a calamity? After all, luck is such a fickle thing. ‍

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

A fighting genius.

Lucas Arthur was nothing more than a weak and struggling C-rank hunter, barely getting by in a world where power dictated everything. Forced to participate in a risky raid in a Class B cell, he found himself abandoned by his comrades when a deadly ambush left one of them, Andre, mortally wounded.As Lucas stood beside his dying comrade, the impossible happened. A glowing blue screen appeared in front of him.[Congratulations! You have earned the unique skill: “System Maker (SSS Rank)”]Before he could realize the absurdity of it, another prompt followed.[You have met the requirements to grant Andre the System: Evolutionary System]Driven by instinct, Lucas agreed and watched in shock as Andre's wounds healed, his strength rose, and his eyes shone with new power.Then, with unwavering loyalty, he spoke:*“Your orders, sir?”*It was then that Lucas realized he had the power to create systems for the Hunters, growing stronger with each follower.Each follower and each hunter Lucas gave a system that could evolve and increase in level and powerBut as Lucas grants more systems, powerful enemies take notice—ones who would do anything to control or destroy a System MakerWith every hunter he empowers, Lucas steps closer to becoming an existence that defies the very rules of this world.