It seems that Sasori was moved by Kankuro's speech and disappeared. I was kind of hoping for a good 1-on-1 fight between the 2. I should've seen it coming. So typical Sasori, he was never really much of a villain to begin with. Oh well, at least he aknowledged Kankuro and entrusted him with the mom and dad puppets, so I'm not too upset. I just hope we get to see more of Kankuro's new Black Secret technique in the future so that people won't think Kankuro is all talk.