When I saw the thumbnail, I thought it was just going to be "S" and "S", because she's always S, no matter her expression.
On that note, a Byakuren image with "Calm" and "Furious" (maybe even "Furioustic Finaliality Steaming Dream") but using identical pictures would be pretty funny.
As much as I actually prefer a somewhat sadistic girl, that blood on her hands gives me the feeling that this Sadistic isn't quite what I'm looking for.