One is able to harness reality warping powers that mutated his abilities on a scale that Gods can't even comprehend. He lives in the most terrifying danger zone in the universe where World Beasts such as Byakko, Jormungandr and the like live - although he treats them as his pets. Elysium is an amalgamation of numerous worlds whose fusion was a result of a great war between Gods, World Beasts and Heroes of the various Races; in this world, the balance is kept thorugh fear of One Above All, the “Supreme Being” noted to live in seclusion. The only problem is that One has no idea how powerful he is, having lived his entire life in seclusion inside Pandora, the dwelling of World Beasts. How he got there, he has no clue. One also has a couple of friends who he cherishes. He has no idea that these "friends" are among the most powerful Heroes and Gods in the cosmos. Even the Demon Lord himself pays One a visit every month to deliver him his food, so naturally One thinks that the Demon Lord is simply a convenient delivery boy. On a fated day, One decides to leave his domain to live amongst the mortal beings not knowing what kind of special existence he is. Will he join an adventurer guild? Be recruited into a Knight academy or will be kidnapped by the beast race to act as their Strategist?