Both titles is provided with historical facts about post war russia and japan relationships. Based on the real life events around yevfimy vasilyevich putyatin a russian admiral noted for his diplomatic missions to japan and china and the signing of the treaty of shimoda in 1855. Bakumatsu no spasibo based on the real life events around yevfimy vasilyevich putyatin a russian admiral noted for his diplomatic missions to japan and china and the signing of the treaty of shimoda in 1855.