Kurtz failed a mission!
That was a word never said.
Kurtz, a legendary Mercenary had finally received a ticket to the underworld. 
He was back at home just in time to discover a great threat rising against his kind.
As a rejected prince and murderer of the last Blood Queen, would Kurtz choose to help his people?
However, his identity was much more mysterious than Kurtz had ever think.
Would Kurtz fulfill his parents wishes?
Would he find out the truth about his origin?

SYSTEM OF THE BONE DEMON

Somewhere in space between the earth and the moon... 


In a large room surrounded by dark smooth walls, the president could be seen still staring at a screen on which Kurtz and Aria's face could be seen when his face suddenly turned blank. 


A man, sitting to another side in the room who had a dark bland mask covering his features suddenly tapped on a button and the screen went blank. If Kurtz was here, he would have been surprised to see his Boss. 


"Wh... what just happened." The President suddenly asked as his dreamy came back to life. 


"Seems his mental force has improved quite qualitatively, I have really struck gold this time." A voice spoke from the masked man but he did not seems to be speaking to the President. 


The president looked at him for a moment before giving a tired sigh before looking through the smooth wall of the room beyond which he could see a gigantic grey sphere floating on in the endless cosmos. They were almost on the moon. 


TO FULFILL A PROMISE