Warden of the Nine Hells

The Human Emperor hunted evil demons throughout the heavens, imprisoned them in the Nine Hells, and banished them into the void!

Tens of thousands of years later, the Nine Hells descended upon the mortal world. It should have been the perfect chance for the demons to break out of their prison, but instead they were sealed within a boy's eyes. From that day on, he became the warden of the Nine Hells.

Was this a fortuitous opportunity, or a great calamity?

Facing the demons of the heavens, the boy said, “Behave yourself, or I'll crush you!”