Decryption

is episode 154 of the Naruto: Shippuden anime.

Synopsis
This episode opening begins with the decryption of the code Jiraiya left on Fukasaku's back. Shikamaru questions Naruto to see if any ideas for the code's decryption pop into his mind. Immediately, he realized the first number '9' was actually a writing quirk of Jiraiya's meaning 'ta' in katakana. 'Ta' lead to the Make Out Tactic series and from there, Shiho, Naruto, Shikamaru and Kakashi decoded the message to mean 'The real one's not among them'. Later on, the decryption team relays the message to Tsunade where Naruto first learns the ways of a Sage. He is taken to Myobokuzan through the Reverse Summoning Technique initiated by Fukasaku through Naruto's contract with Gamakichi. At Mount Myoboku, Naruto begins to learn in depth knowledge of the sage after having one of Shima's meals.