After defeating Mizuki using the Shadow Clone technique and finally being recognized as a real ninja by Iruka-sensei, Naruto at 12 years old goes to the Academy to be put on a team as well as a jonin who will act as his teacher for the next several years.

Naruto: "Jeez, I wonder who I'll be paired up with. I hope it's not fucking Sasuke. That would seriously suck ass, dude."