|Major battlegrounds||Heartland City|
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The Numbers War is a war which was declared by Kyoji Yagumo on Yuma Tsukumo, Astral, Shark, Kaito, and Dr. Faker's group in the Yu-Gi-Oh! ZEXAL manga. The Numbers are the ultimate objective of all sides, as it decides the victor and the fate of Astral World and the Human World. According to Cologne, whoever wins the Numbers War gets all of the Numbers.