This story is centered around the man named Yi Ji-Hyuk, who has spent 1000 years in a Medieval Western fantasy-like world before returning back to the modern-day Earth. When he returns, he finds that his home is facing monster threats, and that humans with superpowers have appeared to protect the innocent people of Earth.... more>>

The thing is, Yi Ji-Hyuk himself lived like a true, bona-fide Demon King in that fantasy world, and the only reason(s) why he returned home is to find some peace and easy going life. So, what will a man like that do? <<less

He had always wished to live a new, ordinary life. That was his one and only wish.... more>>

But the world did not allow him to.

‘I wanted to live ordinarily, but you’re the ones who provoked me first!’

Who was the one who provoked the sleeping lion first?

It’s now time to witness the great Demon Master’s reproval of the modern times! <<less