Alice game.

How appropiate. Espeically since Rozen Maidens are, after a fashion, Danmaku users (feathers, petals, vines, roots). I hope she doesn't get any ideas about stealing her Rosa Mystica.

This pairing make so much sense.

The dolls all wanted to become Alice, the doll obsessed hermit who wishes to create self-aware dolls.
Seems awfully cyclical. Makes me wonder if Rozen was once a GI Joe or Ken.

I don't know why they don't have more crossovers that are obvious like these.

On the otherhand I wonder how would suigintou would be like in Shinku's position here.

And then Alice tears Shinku down to find out how it(doll is a doll and I am calling It...well IT!) works