The seven realms that appear in this animation all come from different periods in Japan, namely Yayoi, Heian, Sengoku, Edo, Meiji, Showa, and now.

• 这7个领域出现在这个动画片内都是来自日本的不同时期，分别叫做Yayoi,Heian,Sengoku,Edo,Meiji,Showa和现在。