Moshulel said:
Iruka was the closest thing Naruto had to a father figure, and we all know how he treated him
Ummm. Iruka didn't raised him since he was a toddler you know? It's a bit different than that...
I'm not going into educations role in character formation but Naruto should end up different. Oh well...
I don't see him stopping being a prankster or disrespectful regardless of education. Furthermore, I never said Chizuru would approve of the Sexy no Jutsu, but as you said, he'd be less ignorant in this one... wich means he'd realize just how important taking enemies by surprise is when you are a ninja.
And few things take male ninja more by surprise than suddenly seeing a naked woman before them.
You can preach about morals all you want, but this Naruto realizes that the road he chose for himself when he insisted on becoming a ninja is a rocky one where morals have little, if any, place. And to stay alive, he has to make every trick count.
Whether it's fair or not is irrelevant, and while Chizuru won't approve of this particular trick (heck, she won't approve of him becoming a ninja at all, but his heart is set), she'd approve even less of him winding up dead because he lacked whatever trick he needed to distract his opponents.