5 years after the falls of Magic Empire.

The Holy Kingdom who leads the Union of several countries, While restraining the other powers, neglected to keep peace. The people of Holy Kingdom dreams of perpetual peace, with the wealth taken from Magic Kingdom, buying all slaves from minor powers, pillaging and indulging themselves with the territory they snatch. However, unknown to them, there are forces that moves behind the darkness. These people are memento of the dead Empire, the prince and princess of the long gone empire, a pair of siblings.

Harva, the princess, is a weak but lovely and energetic little girl.
Alarc, the prince, is a handsome young man with beautiful kind smile.

â??That day, is the unforgettable day for us right? brother!â??
â??Yeahâ??

The siblings escaped that day, the day when their loved country turns into land of nightmare, the day when the white sacred walls turn into crimson walls of blood and fire, and the day when they lost everything. The siblings trained themselves, enduring pain, sadness, losing sanity, selling their soul to the devils, knowing that losing their former self, they create the foundation of what would be their last and dearest wishâ?¦

â??â??To grant our wish (revenge)â?¦, â??we create the, wickedly vicious Underground Empireâ??â??

â?¦.thus, start the dark tale of revenge and retribution.