On April 21st 2022, the Japanese National Cabinet was overthrown by the military in an unexpected coup d'etat. The world is in turmoil; war seems inevitable. Amidst the Russo-Ukrainian War, Japan strikes a military alliance with the Russian Federation. The US Army stationed in Japan asks "politely" for the military junta to stand down, or else, they'll face total annihilation. You are a National Defense Academy graduate, assuming the rank of Tank Major. Given that Japan has no active military, they provide you with maidens trained in the art of the tank, Senshado. Watch the world from the prelude of a global warfare, through the eyes of Kazumasa Takagi, as it paces and evolves rapidly into yet another World War.