"The Child of Prophecy" (予言の子, Yogen no Ko) is episode 439 of the Naruto: Shippūden anime.
Tsunade's reading is interrupted when her candle burns out. Shizune replaces it and asks her not to overdo it. Jiraiya battles the four-tailed Naruto, who destroys his Chakra-Suppressing Seal. He manages to immobilise Naruto. Jiraiya thinks back to Gamamaru's prophecy. Sasuke thinks back to being unfavourably compared to Itachi by their father and begins fighting Sasori's puppets. The other genin join the fight to protect Sasuke. Team Jiraiya observes the fight. The masked man and Neji debate on the genin's motivation to fight. Sasori reveals spare puppets. Naruto thinks back to his Rasengan training with Minato, and manages to suppress the Nine-Tails' chakra. Jiraiya retreats, and sends Naruto to help his team-mates. Naruto manages to use the Rasengan, and uses it and several clones to dispatch Sasori's puppets, causing him to retreat. The genin congratulate Naruto, and decide to look for their kidnapped team leaders. Neji asks the masked man if his test has yielded the results he expected, and surprises him by calling him his father.
Sasori's Akatsuki cloak is erroneously depicted as intact at the start of the episode.