There are two races of humans and demons on the Blue Star. In countless epochs of war, neither of the two races can resist the other.
Until one night, a blood-red straight sword descended from the sky. Countless human and demon powers competed for this supreme opportunity. Just when the demon power was about to succeed, the blood-red mist instantly enveloped the entire Blue Star. The demon power was also swallowed by the fog just as he was about to touch the blood-red sword. Also disappearing was the blood-red long sword. No one knew where it had gone, and no one knew what this long sword would bring to the world.
Destruction or rebirth!
