New Year's Eve 2054 A virus, later named the BlackJack, struck and killed 3/4 of the world's population. Only those who were 21 and younger were not infected. Treaties broke off. Countries severed connection to the outside world. And the country of Yliria built its own invisible walls. Thirty-eight years later...
Yliria is now at peace. But nothing is gained without sacrifices. Yuri's life was perfect. Family. School. Career. Then there's Ryoma. Her one true love. Nothing could go wrong when she has everything planned out. But on the night of their anniversary, it did not end with a kiss. Ripped from their normal lives, both Yuri and Ryoma woke up from a dream to face the real nightmares. As a punishment for their parents' treason, they must serve the government-the System-as the new Aces of the Court Department, assigned to oversee and maintain peace and balance during the weekly Shuffle. ONE WEEK. 13 LIVES.
Armed, not with a weapon, but the same virus that destroyed the world. The Aces must escape their new fate. If not, the only path left in their future is the one covered in blood.