User blog comment:YMunesanzun/.../@comment-2037710-20140911074314/@comment-5807506-20140911074859

Again, I'm taking some liberties.

Considering that the progression of any individual Kitsune isn't actually detailed in MGQ-World (at least not that I'm aware of), going on the assumption that the tail-power scheme progresses with age (perhaps excluding Tamamo), Yao could at least be from the 2nd Monster Lord's reign as well.

Again, this world was/is a blank slate for the most part, so why not, you know?

Why not? :L