The Earth may be 1 world but exist multiple dimensions that is hidden for who know how long is has been.

One of the realm called Ancient Realm have each nation ruled by individual King's and overseer by Apostle who keep the balance of the Realm.
However one day, a self titled King name Xenon create a war with the other King with his objective to find the way to get inside the No Name Realm, a realm that exist without any overseer or ruler at all. Luckily his plan was interrupt by an outcast group of Ancient Warriors called the Arc. He was sealed away but it only for a while. With the Arc in weakening state and performed the forbidden seal, Tatsuya who was granted a hope by the Arc have to find new generation to harness the Arc power and help fight against Xenon in the future. What kind of journey will the new generation have to reach the state as the current Arc is? What is the truth for the No Name Realm? Don't miss out in this amazing journey !