The story of a boy who vows revenge. Farewell to his beloved father. Meeting a new family. And then his everyday life was shattered so easily. He could only submit to his cruel fate.

Long, long ago, the terrible Over Devil was defeated by the eight Chosen Ones, each wielding one of eight Sacred Artifacts. This brought nearly a century of peace to the land. One day, the eight Sacred Artifacts, which were supposed to have disappeared along with the Over Devil, reappear as…