"A Logical Decision", known as "Declaration of War" in the Japanese version, is the seventy-first episode of the Yu-Gi-Oh! VRAINS anime. It first aired in Japan on October 3, 2018, and aired in Canada on April 5, 2020, resuming after a short hiatus that followed the previous episode.
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.