The blade rings across the heavens, the swan strides toward its ambition.
May this blade break through every pass and guard the peace until the iron cavalry returns.
In 2599, a demonic star descended upon Earth, releasing polluting substances and ushering humanity into an age of demonic calamities.
Every animal was corrupted and turned into a demon beast, while humanity underwent genetic changes and gained the ability to awaken extraordinary powers.
A young boy grew up alone in the slums, where the roars of demon beasts filled the air.