"Declaration of War" is the seventy-first episode of Yu-Gi-Oh! VRAINS anime. It aired in Japan on October 3, 2018.

Playmaker's attempts to prevent conflict between Ignises and humans have failed. Due to Varis' attack, the Light Ignis is now hellbent on subjugating the humans. The Light Ignis then declares war on humanity and kicks off his plan to place humans under the Ignises' control. In order to accomplish the Ignises' goal, Bohman appears and challenges Playmaker to a Duel.

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