Long story. Basically, her left arm and leg are sort of possessed, but not exactly. They're 'demonic', and the reason is the fact that she's possessed by a guy named Tyrann. The... um, 'futa' thing actually has nothing to do with her being possessed, in case you were wondering.
We just beat the hell out of a monster,so your body's just burning up, isn't it?I gotcha.Like I said, I'm gonna help you out.Feels good, doesn't it?You wanna come, don't you?Go on then, come!Stop worrying, okay?Cuz nobody's watching anywayLet your pointlessly composed facial features twist and warpand spray all over my hand! Kaine!Ora! Come! COOOMMMEEE!KAKAKAKA--!It'd be a shame not to enjoy it!Hey, we've got such an interesting body, after all