Potaatoo

Keith, a regular office worker from Earth, suddenly transmigrates to the world of the novel he had been reading for the past decade. The new world, which was also called Earth,  was slightly different. 

People with various powers existed who were called awakeners, making this world comparatively dangerous and also mysterious. While he was thrown into the novel's world, he was also given a mystical ability to grant systems to other people. 

Armed with his special ability, he slowly climbs up the power ladder by taking "taxes" from the people he would give systems to. The only question that remained, was what would a realistic normal man, when faced with a similar minded protagonist, do when their goals opposed each other.

God of Systems: Maker of Heroes and Villains

As Amelia slowly walked towards him with a wooden sword held in each hand, his thoughts wandered.

'I've fought against the black cat guy a few months ago and he was way faster than Arthur. Even then, I was unable to fight this old man properly... there's more to his awakened ability, or he's just... I don't know. Maybe all of this is just the effect of experience?'

He then took the wooden sword and watched Amelia give the other one to her father.

"Hey, I've fought a guy who's faster than you and held my ground to an extent, but even though I can keep up with you, I'm unable to beat you. Is there a reason for that?"

Arthur raised his eyebrow slightly and then smirked, "When two people fight, they not only use their bodies but also their minds. I've been born with the talent to predict what the person in front of me is thinking.

You're Not a Genius. You're a Monster