A subjugated country creates doomed heroes, and hatred and demons are born from the ashes. In an ancient country that has been passed down for thousands of years, the noble bloodline was lost at the end of the world, and the gods' families were buried in the caves of the dark abyss. What connects the two worlds is the sigh of Gu Mu's lonely soul...
The isolated island under the name of the Yusan Family - Nibelungen is a small country that exists for the research and development of ESP. It has established multiple "academies" for people to learn superpowers, including their heirs who are about to join.
On the other hand, the permanent peace treaty between the Yusan family and the coalition forces many years ago seems to have been unilaterally torn up. What is the purpose of the originally weak coalition forces doing this?
And the story begins on this isolated island...