Who is in the background? She isn't tagged.

And what's going on? Actually?

Meiling is making a reference to one of the M1's skits where she's trying to make Patchy fit.
Remilia and Flandre are the cruel Sisters harassing the maido. Famous Innocent Key flash.
Patchy and Koa are being Patchy and Koa.
In the painting is Cirno........ no idea how she got there.

dandan said:
Meiling is making a reference to one of the M1's skits where she's trying to make Patchy fit.

Thanks, found it.

This accordion made my pretty puzzled along with Patchy being here.