Age of Beast Tamers and Exorcists - Chapter 37: Curator

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

In the cutthroat world of Westeros, where power is a game and everyone's fate is a pawn in a deadly chess match, Gendry is a nobody with a secret that could change everything. A bastard with the blood of the Stormborn coursing through his veins, he's been thrown into the scorching heart of a blacksmith's forge. Here, he'll face the trials of iron and fire, learn to hide his true identity, and carve out a path through the treacherous whirlpool of power.As the shadow of the Spider spreads across King's Landing, Gendry's fate takes a dark turn. Can he survive the deadly game of politics? And will he find his own glory amidst the forge's flames?

Yi Jiamu was a patient with the ‘Ability Deficiency Disorder’ and he inadvertently attracted Gu Yesheng’s attention.

Arthur got randomly transported to another world. Some people would find that terrifying, but not for him, who was tired of his old life; it was an opportunity.

And, after having bad luck all his life, the tide changed.

It was a world of magic where wizards fought side-by-side with their familiars. Arthur got summoned to be one of these so-called familiars.

He was furious. The thought of becoming a pet was not something he liked. Well, that changed when he saw who his master was.

A hot-woman. And, to make everything better, Arthur was inside the Frostpeak Magic Academy, which only had women students.

“This is heaven. All familiars are beasts, but I'm different. I'm a good-looking man inside a place filled with hot girls.”

When he thought his luck could not get better, he unlocked a system that helped him with everything. Of course, he used the system for a greater good, like getting girls.