I mean Tsunade, Orochimaru, and Jiraiya weren't even able to kill him during one of the ninja wars. He was the one who deemed them the title sannin. They were in their prime time. He has 2 at least be ten to twenty years older than Tsunade.it He may have grown old, but it has been shown in the manga that many of the old ninja's still got it. Fueled by hate for the senju clan, do u think he will be able 2 pull of his plans?