What purpose did it serve? Is it possible Orochimaru was sent from the Akatsuki to do it? Black Zetsu pretty much influenced the events of everything in naruto so did Black Zetsu have anything to do with Hiruzen being assassinated at that particular time. Because I think Orochimaru actually had another agenda had he not lost his hands. I'm still trying to figure out what Orochimaru's motive was ?? Someone answer this please.