I think the ending of Naruto is a tragedy, because this cartoon wants to bring the audience's ideals back to reality, but there is a sense of powerlessness, because from this cartoon, all the protagonists are growing up, in order to realize their ultimate dreams, but all kinds of stories happened along the way, including tears and contradictions, but they succeeded. The ending is a happy scene on the surface, but it is actually full of compromises, so I think the ending is a tragedy, and every character has a tragedy.

First of all, after Uchiha Itachi died, there was no tombstone in Muye Village. The truth that the skunk knew disappeared forever like his wish. Although his sacrifice gave Konoha peace for a long time, and helped Sasuke and Naruto grow up before his death, Naruto did not rehabilitate Uchiha Itachi after he became Naruto, so Uchiha Itachi always bore the blame and never disappeared among Naruto.

Second, in the finale, Sasuke started a journey of atonement all over the world, which is also very tragic, because Sasuke has no sin at all. At that time, he didn't know anything at all, and the upper level of Konoha didn't tell him the truth at all, so he has been revenging his family. In the end, he saved all the people who lived in Harle with Naruto, and the Naypyidaw family wanted to defect, and they were all ended by ferrets themselves, so Sasuke had nothing to redeem.

Third, although the finale is the arrival of a peaceful era, many innocent villagers have been sacrificed for this answer, which is completely different from the worldview brought by Naruto in the early stage. Moreover, Sasuke once said that peace in each ninja village will not last long, because as long as there is a ninja profession, there will be competition for interests and war will never be avoided. Therefore, saying a good ending now does not mean that there will be a good ending in the future, nor does it eliminate the hatred of forbearing the world from the root. Most people have sacrificed their individuality.