Since ancient times demons could open portals to various human worlds scattered across the universe. And since ancient times, they've been using it to their advantage, invading and pillaging every realm they gained access to, only to abandon it once it's devoid of resources and hope.
You play as Van (default name), the son of the demon king. Despite your royal blood, your abilities are average at best and you struggle to absorb demonic essence. You have one thing going for you, though.
Your ominous innate power - The Sovereign of Lust.
As you travel through various worlds and grow more and more powerful, will you continue the family tradition of spreading havoc, or will you change the way demons look at humans forever?