Naruto's ending was not yet decided because the manga was not finished yet. However, according to the released plot, Naruto did not die in the end. Instead, he and Sasuke achieved their common goal of saving the entire world. In the final words of the manga, Naruto and Sasuke joined forces to defeat a powerful enemy and achieve their common goal. In the process, Naruto and Sasuke's relationship developed further and they became best friends. Although some people might die, this did not affect the value of Naruto as an epic work. The whole story covers many topics, including friendship, courage, trust, sacrifice and love, which are all very valuable elements. Naruto's ending may surprise and move people, but it won't lose its theme and value.