
Of course the reunion of Sasuke and Itachi facing Kabuto, culminating in Itachi saying that he'll always love his little brother.Particularly heartwarming in which it comes right after the dog-kicking fest that was the previous sidequest with Ino, Tenten and Sakura. The sidequest where Iruka and Kakashi talk about Naruto's growth.This is especially heartwarming because Gaara actually wanted to apologize to him for doing that! Gaara even says that he thinks that Lee, Naruto and their teachers are wonderful and he's happy he met Konoha. In this friendship scene between Rock Lee and Gaara, Lee tells Gaara that he holds no grudge against him for nearly crippling him during the Chunin Exams because it helped him get stronger and overcome that challenge.Naruto can really cheer up Hinata by helping her on a mission and choosing her type of person over a type like Sakura and Ino in the "Ultimate Decision" sidequest.Think a very sped up version of the 'pray' sequence in Earthbound. Then calling the Nine-Tails by his true name, Kurama. Naruto saying that the Nine-Tails was not a demon fox anymore.As he is sealed, he finally considers Gaara worthy of the title of Kazekage. Gaara finally getting his Archnemesis Dad to acknowledge that his life did have purpose after all.After revealing his mother is Kushina, she gives Naruto the comb. He finds the comb for her, and she says Kushina gave it to her. Naruto found the girl later as an adult woman, who lost the comb. During her pregnancy, Kushina gave a young girl her favorite comb as a memento.The way before and after the battle how they casually talk about Naruto and how much the two were an influence on him, was nice, to say the least.Add to this playable flashbacks of the battle on the bridge from the early series and you have the Ur-Example of Heartwarming boss battle, goes on Tear Jerker territory too. As Kakashi engage the battle, he is very displeased with the Reincarnation suppressing Zabuza's mind and turning him into a mindless killing machine. Zabuza and Haku express their displeasure at being resurrected and controlled as they beg for Kakashi to finish them.

The outcome of Naruto's struggle with his Enemy Within in Chapter 3.
