ah, WHO is that person behind Sanae? At first I wanted to say Yukari, but those shoes are nothing she'd use, and there would be a pool of blond hair around Sanae if she were. Any green haired, purple wearing girl you people remember?
Or how is this tagged over Pixiv?

All Range Form "Armed Yukari"

So Yukari's head formed into Sanae or whatever.

So Yukari's head formed into Sanae or whatever.

What.