Curse of Grudge - 黒の怨恨

In a world torn apart by war between humans and monsters, where savage creatures invade cities and powerful beings are sealed within magical dungeons, survival is dictated by strength alone. Kingdoms crumble, hunters fall, and betrayal is sold for the lowest price.

Rin, a boy who knew nothing but pain, was one of the victims of a vile pact between the King of Humans and the Demon King. Sold alongside other children, he was cast into an unbearable hell within the palace of monsters. There, he witnessed horrors beyond imagination, was forced to fight, tortured until his soul shattered, and had his body branded with the blood of demons.

But he did not die. He did not break.

Instead, he was reborn...