If the Land of Waves establishes the characters, the Chunin Exams (beginning around the midpoint of the 1-72 span) establish the world. This arc is often considered the peak of the original Naruto , and the Kai treatment amplifies its strengths.
0;faa;0;2cb; 0;d7;0;f1; 0;88;0;98; 0;279;0;1c1; 0;1152;0;b1f; Naruto Kai 1-72 -Complete- -BB- -No Filler-
(Episodes 46–72 of Kai)
“I don’t know what a ninja is supposed to be. But I know one thing… I’m not done yet.” If the Land of Waves establishes the characters,