- The vanilia situation in Kusari was modelled after early Meiji Restoration in Japan, where Shogun lost his ability of leadership and it was the Emperor who gained his power back (after over 300 years of lack of power, because Emperor did not have real power after Ōnin War and during Sengoku Period)?
- Current situation in Kusari could be modeled after Chinese's Xinhai Revolution (1911-1912), where Emperor and Qing Dynasty were replaced with presidency and rather corrupt government?
- Shogun Hideyoshi is named after the real figure, Toyotomi Hideyoshi? (He gained power after Oda Nobunaga's death and became shogun, but after Hideyoshi died, Toyotomi Family was overthrew and Tokugawa gained all the power and finally united Japan in 1600s.)