Earth has become a chessboard, and two warring planets stood on opposite sides. It’s a deadly game and Ruka is just a pawn of Sorbia. The mission was to kill the Taria King by all means. But the question is... who is the King?

Serce is divided. It has been like that ever since anyone can remember. But when the most dangerous treasures of Virgula disappeared, division be damned because Virgula’s most promising Sentinel will stop at nothing to retrieve what needs to be retrieved — even if it means that it’s twelve men she’ll have to bring back. All just to defeat what they had thought was already defeated.