There's No Love In the Deathzone (BL) - Chapter 279 - 272. Reunion

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

Caleb Uesugi, a high school boy, accidentally awakens his Succubus blood and is caught between two High-Class Devil leaders, Rias Gremory and Sona Shitori, who desperately want him as a powerful familiar. He stalls, using the competition and their attractive Queens to secretly gain new talents and boost his power through physical intimacy, while dealing with a mysterious foe who leaked his secrets.Tags：Supernatural Romance，Harem，Devil System，School Life，Power Progression-------------Support me and want to read more chapters:patreon.com/Briery

Just like how everyone adored heroes in their childhood, a certain young man adored those powers hidden in shadows. After hiding his strength and living the mediocre life of a mob character by day while undergoing frenzied training by night, he finally reincarnates into a different world and gains ultimate power. The young man who is only playing at being a power in the shadows, his misunderstanding subordinates, and a giant organization in the shadows that gets trampled…. This is the story of a young boy who had adored powers in shadows possibly eventually reigning over the world of shadows in another world.

“Here you go, this is your wage for the week.”After passing over a small pouch, the woman with her legs crossed behind the desk casually made a 'Check' in a notebook and then, without looking up, waved her hand to dismiss him and said:“Remember to file your taxes... Next!”“Wait a minute!”After pouring out the coins from the pouch and looking at the eight large and one small, totaling nine filthy coins in his palm, Leon couldn't help but widen his eyes in shock, almost wanting to pounce on her and fight to the death right there and then.“Damn it! I just repelled the evil god who was trying to erode the world this Tuesday! You bastard even wants to deduct the salary of the savior?”