Master and Student

is episode 151 of the Naruto: Shippuden anime.

Synopsis
Shiranami uses Hotaru to release the Forbidden Technique, and Naruto and Utakata are caught in the blast. Naruto regains consciousness and wakes Utakata. Utakata stops Shiranami with his Soap Bubble Ninjutsu and at this point, chakra is being absorbed in great amounts by Hotaru's body. Shiranami flees the scene knowing that the technique is now out of control and the latter is able to destroy the village. Naruto chases after him to get him back. Utakata uses the power of the Six-Tailes to control the accumulation of chakra. He meets Hotaru in a spiritual intervention and stops the explosion. The village is finally at peace and Utakata has accepted Hotaru as a student. He leaves her momentarily to meet with the Hidden Mist ANBU, but encounters the Six Paths of Pain instead. The Asura Path traps him with his Flaming Arrow Missiles and this leaves him crushed under a cliff. On the verge of death, Utakata sends a myriad of bubbles where Hotaru is awaiting his return.