Sacrificial

Uzumaki Naruto, born a small handful of years earlier, faces different challenges than in canon. Not that they're harder, but they are no less easier.
Kindness is rare. Honesty is rare. The truth, is rare.
So when he's offered all of that, he has no idea what to do. How is he supposed to react when someone shows him kindness? What's he supposed to say when someone is honest with him? And the truth?
Well, the truth is never black and white. This world is not black and white. It's colorful and vivid.
He never thought that he'd meet someone as stubborn as he was, but the Uchiha clan? They have it in spades.

Or: Naruto decides that if nobody will help him, then he'd help himself. But when people come along who want to help him, get to know him, repay a favor (?)...he has no idea how he's supposed to react