Let’s look at some similarities and differences here.
One thing we’ve learned already is that Masa goes to great lengths to differentiate between characters by giving them separate outfits, since almost all of them are played by Miku and Gumi.
This makes it far less likely that Yamai-Hime is Emi.
At the very least, we know that purple-robed Gumi is not Mai, and not the princess mentioned in The Fox’s Wedding and Demon Child in the Clear Mirror.
We know this because Beautiful Shadow (…) and Demon Child (…) were confirmed, by Masa, to take place at the same time in different locations.
I do hold fast to my theory that Mai is the metaphorical princess (possibly the demon princess, too).
And I 100% support the idea @shishikusas had. I think that purple-robed Gumi is Emi!
YES. LET’S BACK THIS UP WITH SOME MORE SOLID FACT, SHALL WE?
