Shaikh_Tohaa
Was it 6 years ? But Kakashi became a genin at 6 and jonin at 13. But Naruto became a genin after multiple failures. And Sasuke is younger than Naruto and became genin at 12.... So they must start school at 5 or 6
There was a change of rules between when obito rin and kakashi entered academia and when naruto entered. So don't try to write by looking at them. http://***.animefamily.com/Naruto/Analysis/Articles/Career.htm#:~:text=Most%20students%20enter%20the%20academy,Confusion%20centers%20around%20Naruto's%20graduation. And look Naruto characters were 12 when they graduated