I think Karin's illustration in this chapter is very revealing. Kishimoto does not take her seriously. And therefore neither should we.
Her pervy attitude is similar to Jiraiya's toward women (excluding Tsunade). I wouldn't compare Karin to Sakura at any part in the manga, simply because Sakura was serious about Sasuke. Not just as a lecherous crush, but about being his girlfriend, etc. Even offering to change her nature to better suit him as a partner.
Jiraiya's love of Tsunade was the same way. It was serious business, and in the end he was willing to change himself to be a better partner to her. (Even though he had the pervy side, it was only toward casual acquaintances. Not his true love, Tsunade.)
However, with Karin, she's never been shown to want more from Sasuke than the physical. And the physical side is shown as lecherous as you can get. She has never reflected on how might be a better partner for Sasuke, no internal dialogue, and she has never outwardly changed to better suit him.
I think Kishimoto is illustrating Karin as exactly the character she is: Someone who doesn't have any allegiances except to herself. She doesn't care that it's the middle of the war. And she doesn't really care that Sasuke's not into her. She still wants to jump his bones. And right now, probably the only reason she's even participating is the thought that she might have a shot at it.
I think this scene was meant as a moment of levity in the midst of a war chapter. But as a character, if Kishimoto's no longer taking her development seriously, then neither will I.
I understand what you're saying, and it is a valid point that Sakura and Karin cannot really be compared (and I only said "a little bit"), but I'm not sure we reach agreement for the same reasons.
My view of Sakura's original attraction to Sasuke is that it wasn't based on more than the physical, either. It wasn't as pervy as Karin is now, since Sakura was only 11 or whatever, but the first revelation we got from Inner Sakura was, "Today I'm going to get Sasuke-kun, and I'm going to steal his first kiss!!" Not exactly deep, even if she later said she was "serious" about Sasuke.
And I would argue that Karin's affection for Sasuke (however retconned it might be) had a better foundation than Sakura's did initially, since Sasuke at least saved Karin from the bear in the Forest of Death and she had a reason to immediately appreciate him. When Sakura was first interested in him, it was not based on any personal interaction or knowledge -- only that he was the aloof, cool genius who all the other girls fancied. (That would change later, of course, when Sakura was teamed with Sasuke and realized there was more to him than his looks and coolness, and she began to feel for him as a person.)
I've said this too many times already, but I don't think Karin should be expected to be normal, neither should her behavior be judged on the same scale as Sakura or any other girl in the story. Karin is very damaged, and even in her chapter debut Suigetsu tells Sasuke that Karin is not normal because she was "experimented on a lot."
Since the moment we met Karin as an "adult" she has been characterized pretty consistently, in my opinion. Kishimoto might not be developing her, but how does such a damaged creature develop? We haven't seen any in Suigetsu or Jugo, either. That's part of the problem with Team Not Seven. What real purpose do they serve other than to show the depth to which Sasuke has sunk for companionship and minions to control? What purpose does Karin serve other than, as I said before, show how damaged a girl would have to be to continue pursuing Sasuke as a guy worth getting for any reason at all?
Sakura is the "normal" character, according to Kishimoto, right? She's the girl without a terrible childhood or any personal hardships to speak of, at least until she became a ninja. Karin was an orphan, one who was collected by Orochimaru and turned into a lab rat. Based on that, I wouldn't expect Karin to have any allegiances, except possibly to Orochimaru as has been demonstrated. But deep and moral allegiances like the other characters? We haven't been shown that she's capable or even knows what that really means.
Point being, I do expect more from Sakura. That's why I think having Karin's fangirling of Sasuke is a good reminder that we expect to see that Sakura has grown in that department as well, and that Sasuke is the road for the damaged and shouldn't be traveled by a girl with better sensibilities and options.
Just my opinion.
Edited by KnS, 18 September 2013 - 09:33 PM.