Everything in Naruto works on a fascinating hierarchical structure of squads; one sensei and three pupils; two boys and a girl. These squads or teams are always made of three predominant personalities; a hyperactive male ninja (Naruto, Kiba, Kakuro, Jiraiya, Obito etc.), a driven strictly business male ninja (Sasuke, Shino, Gaara, Orochimaru, Kakashi etc.) and a usually useless, annoying female character (Sakura, Ino, Tsunade, Rin etc.). This is the core of Naruto’s structure and its fascinating how many different characters are created through this strategy. Additionally, this allows for a narrative through line between all generations of ninja in the Naruto universe. You can fascinatingly follow the learning tree up the ladder from teacher to pupil to teacher’s son to pupil’s son.
In my opinion the most fascinating aspect of Naruto is whenever a flashback is enabled by Kishimoto. Naruto would be so much more interesting if Naruto was irrelevant and we focused on literally any other era in the history of Naruto’s lore. Naruto and Sasuke suck in comparison to Orochimaru and Jiraiya or Kakashi and Obito. But the fascinating core to every is the linage and how certain squads functioned and interacted with these other established personalities. How did Orochimaru interact with Jiraiya before the split, how did Minato interact with Orochimaru, how did Itachi interact with Jiraiya before the both left the village. All these interesting characters would have all lived in the Hidden Leaf Village before the start of Naruto and it’s so much more interesting than whatever-the-fuck is going on in the contemporaneous Naruto plot. Naruto’s fascinating Hierarchical structure with the squad system is genius and makes Naruto’s kayfabe past so much more interesting and easy to understand.