I didn't have anything planned for Fake Yukari's true identity.
I did consider *betraying everyone's expectations* and making it Rinbokusan Sasaki... But I think people would get mad at me for throwing away the big reveal just for a gag.
So I guess Fake Yukari is an amalgamation of half-formed thoughts and ideas from all across Gensoukyou, or something.
It was pretty fun drawing all these action scenes.
I don't have any plans to continue this story right now. Sorry.