[HoneyBadger]

Yomi strikes me as slightly more pre-Buddhist Tibetan, or atleast proto-Asian than Japanese, but I'll admit it's more of an impression and perhaps a cutting-of-hairs than an absolute fact.

Also, I have to wonder why Onis are equipped similarly to Samurai-curved swords, armor, etc. when the Samurai culture apparently came after they did? I think I would have chosen to arm Yomi's nationals with Chinese influenced weapons over Japanese-or atleast used historically more accurate weaponry-and not shown the early Japanese influences until Shinuyama.

Later Oni *summons* would have been fine and appropriate with Samurai-garb, but the famous curved swords/bladeforms of the Japanese came as a result of Samurai culture, and didn't precede it.