Humans and Demons at War: Did the Male Lead Switch Sides from the Start?

In another world, demons run rampant, and humans and the demon race are locked in a fight to the death.

To better combat the demons, many people awaken supernatural abilities.

Ji Yuan, the protagonist chosen by another world and descendant of Ji Ying, the strongest superpowered hero,

awakens an S-rank ability, Demonization, after the Demon King infuses him with demonic blood!

If he wants, he can turn anyone into a demon!

Pushing his own people away? How is he supposed to fight like that?

Ji Yuan says he loves a challenge.

As he battles the demons, Ji Yuan gains supernatural abilities:

Innate abilities: superhuman combat skills, sharpshooting, keen judgment, and an unbreakable mind

Gained abilities: infinite strength and flight

Demonic abilities: piercing strikes and infinite regeneration

Seeing he can still be useful, the king tries everything to win him over.

Ji Yuan: "Ha! Not interested. I'm switching sides."

Demon King: "Join the demon race! You'll be the next Demon King!"

Ji Yuan: "In your dreams."

A succubus kneels at his feet in devotion: "I will follow my lord forever!"

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.