"The Third Hokage, Forever…" (三代目よ、永久に……!!, Sandaime yo, Towa ni……!!) is episode 80 of the original Naruto anime.
Critically damaged, Orochimaru calls off the invasion and flees the village with his forces. In the forest, Naruto and Gaara both lay on the ground, devoid of chakra. Naruto sympathizes with Gaara for his childhood but threatens to kill Gaara if he should ever bring harm to his friends again. Sasuke comes to Naruto's side and informs him that Sakura was going to be all right. Realising that Naruto's strength came from the desire to protect others, Gaara begins to reshape his view of the world as his siblings take him home, and apologises to Temari and Kankurō, much to the two's surprise. The next day, the ninja of Konoha mourn the deaths of those who died during the invasion, especially the Third Hokage. Naruto wonders why people sacrifice themselves for others, and Iruka says that it leaves behind a legacy to others, and they are remembered forever. At the same moment, two shinobi are standing outside the village. One asks the other if he feels sorry for his old village. The other hesitates a little but eventually says "no", and moves his head up a little, revealing the eye of a Sharingan.