Ahaha, does he wanna do a birthday spar? that... He might not know is a birthday spar until after the fact, cuz hell if she's gonna be the one to tell him Otherwise it'd have to be after the Body Swap event... Which might make sense, given she switched with Sephy and Kisame, both of who have far more chakra reseves and all around skill than she does in most case. And she's gonna be hell-bent on fixing that.