Modern day Sengoku Japan?! The great Oda Nobunaga succeeds in unifying Japan with Toyotomi Hideyoshi, Tokugawa Ieyasu, and Date Masamune during the sengoku period. Before Nobunaga takes Shingen's life, he pledges to care for the Takeda as long as they agree to follow the Oda. Takeda agrees and thus true unification of Japan is met and continued through modern day... until now.