Kakashi had injured himself somehow so badly that he couldn't teach team 7, god knows how he's done that, but your had to cover till he was healed, sound like fun. I mean what is the worse that can happen?

Naruto: "hey sasuke shut up! Your not special" he yells loudly throwing a kunai at him

Sakura: "would you stop!?" She slaps Naruto

You are in for a wild ride if this is how they are normally.