The Mythyrian Numbers War is the fifth arc of the Yu-Gi-Oh! ZEXAL. The arc focuses on the upcoming battle of Yuma, Astral and their allies efforts to obtain the 7 Mythyrian "Number" cards before the Seven Barian Emperors can use them to find the Numeron Code. However, thanks to Vector, the Barian deity, Don Thousand, has been released and begins to set his own secret grand design for the Code and the three worlds in motion.