Iruka's Decision (イルカの試練, Iruka no Ketsui) is episode 178 of the Naruto: Shippūden anime.
Iruka runs into the hills and finds Naruto, trying to convince him to return to Konoha. Naruto makes a quick getaway by performing the Sexy Technique on Iruka. Naruto runs into a group of kunoichi from Takigakure who want the paper containing the intel of Konoha's border patrol that Naruto found. Naruto tries to get away from them and runs into Iruka again. The two try to escape the kunoichi and are saved by Kakashi who easily defeats the kunoichi. Afterwards, Iruka thanks the Third Hokage for making him Naruto's teacher. Iruka tells Naruto that from now on he will be strict with him and Iruka's flashback ends. Meanwhile, with Sasuke's wounds healed, Taka heads out to Konoha and Zetsu tells Tobi of the events that happened. Tobi then orders Kisame to go after Killer B while he has other plans to attend to. Yamato arrives at Konoha, seeing the village in ruins. Shikaku tells him of Pain's invasion and defeat by Naruto. Shikaku is suddenly approached by an ANBU informing him of a meeting.