Naruto: Shippūden

Sai:
Why do you go so far for him? Why are you trying so hard to bring him back, willing to risk your life by going up against Orochimaru to do it? Why? You haven’t been ordered to do this.

Naruto:
You know... I used to hate Sasuke... But once I got used to being with him I realized he's really a lot of fun to be around... he's more than a friend, he accepted me and my existence. Sasuke is my friend... and we have a bond...

Sai:
A... bond? But still, you have to go through Orochimaru...

Naruto:
I don’t care who I have to fight! If he tears my arms off, I'll kick him to death! If he tears my legs off, I'll bite him to death! If he rips my head off, I'll stare him to death! If he gouges my eyes out, I'll curse him to death! Even if I'm torn to shreds, I'll defeat Orochimaru and take Sasuke, once and for all!