I Teach in Naruto, the System Says I am Naruto's Classmate

Kitazawa, a three-no traveler, a mediocre Chunin, taught at the Konoha Ninja School in order to survive to the end. After twenty-one years, he suddenly got a very wrong system. [Congratulations to the host for turning six, the strongest Hokage training system is open. ] "I finally got lucky? Wait, look at my eyes, this is six years old?" [Task 1: Help your deskmate Hinata Hyuga to get back the scarf. ] [Task 2: Graffiti on the Hokage Rock with your classmate Naruto Uzumaki. ] [Task 3: Defeat Uchiha Sasuke and dominate the Ninja School. ] [Task 4: Become the new three ninjas with Naruto and Sasuke, and worship Tsunade as your teacher. ] "Answer me, is it appropriate for a 21-year-old teacher like me to do this kind of task? I won't do it even if I jump from here!" [Task reward: Konoha Uzumaki...