Ten years ago, gates opened in the skies across the world and monsters poured out, pushing human civilization to the brink of collapse.

The only hope was the Hunters who awakened magical powers, but some of them fell from grace, becoming 'Villains' who used their power for personal gain and terrorism.

Instead of executing Hunters, who are precious combat assets, humanity established the 'Villain Correction Bureau' as a last resort to forcibly rehabilitate them and repurpose them as national assets.

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And the new Warden of the Villain Correction Bureau is

Guest