Kakashi cries when Naruto leaves in fanfiction likely because he has grown attached to Naruto over the years and views him as a dear friend or even like a son. The departure symbolizes a break in their close relationship and leaves Kakashi feeling emotional and vulnerable.
Well, it could be that Kakashi sees Naruto's departure as a significant change and is emotional about the potential separation and the uncertainty it brings. Also, he might be proud of Naruto's growth but sad to see him go at the same time.
Maybe it's because of the deep bond they share and the sense of loss Kakashi feels when Naruto leaves.
He might survive through his own sheer willpower. Naruto has always been a tenacious character. So, even when left for dead, his determination to live and achieve his dreams could keep him alive against all odds.
Well, it could be that Kakashi, being a character who values the integrity of the original Naruto narrative, sees fanfiction as a deviation. Fanfiction might include out - of - character scenarios for him or the other characters. He might also dislike the fact that some fanfictions can be of very poor quality in terms of writing and plot, which could be a reason for his dislike.
In some fanfictions, Naruto might feel left out because he has a unique background. He was an outcast in the village at first. Maybe the other characters in the fanfic are forming groups or having relationships that don't include him. For example, if there are new teams being formed and he's not part of them, it could make him feel left out.
Well, in fanfiction, Kakashi might seem to favor Sasuke because Sasuke is extremely talented. He has a natural aptitude for jutsu and a strong drive for power. Kakashi, being a great ninja himself, would recognize this potential and be more drawn to mentoring Sasuke to help him reach his full potential.
Maybe he thinks fanfic often distorts the real story or characters of Naruto. In the original Naruto series, Kakashi has his own understanding and relationship with Naruto. Fanfic might create some scenarios that go against his view of Naruto or the world they live in.
In some fanfictions, Kakashi might be possessive of Naruto because he sees Naruto as a unique and important student. Naruto has a special energy and determination that Kakashi admires. He may also feel a sense of responsibility towards Naruto, as Naruto has no family, and Kakashi wants to protect him. This possessiveness could be his way of ensuring Naruto's safety and growth.
Perhaps there was some sort of dark influence or mind - control at play. An enemy might have manipulated Kakashi's mind in such a way that he believed Naruto was a threat and thus left him for dead, not realizing his true self.
Maybe Naruto is short on money for some delicious ramen and thinks Kakashi might have some spare change. After all, Kakashi always seems to have some mystery about him and Naruto might assume he has some cash hidden away.
He probably gets very worried. Kakashi is Naruto's teacher and mentor, so he'd likely be immediately concerned and rush to Naruto's side to assess the situation.
Kakashi's reaction would be complex. He is a man who has lost many people in his life. But Naruto was special. He would hold Naruto tightly, his hands trembling slightly. He might try to use some of his own chakra to keep Naruto alive a little longer, but deep down he knows it's futile. His face would show a mixture of pain, regret, and love. He would remember all the times he trained Naruto, all the lessons he taught him, and how Naruto had surpassed all expectations.