Well, now that the server works and I can look at it, I know what it is. (And I've seen it before.) That's a fan animation though I don't know who orginally made it. They took the animation of Asuka's sex scene from Typing Viper and replaced her face and upper body with Cala images from the sex scene that occurs in RSR after she's marched into town by Veloce.
In short, that's not a real Sogna/Viper animation. It's not bad though, but you can still see flaws in it (most noticibly that the sheets clip between frames)
