In some fanfiction, the Team 7 missions might be written in a dull or predictable way. Naruto loves adventure and growth, but if the fanfiction keeps having the same type of missions for Team 7, like always rescuing someone or fighting the same villains over and over, he could be sick of it.
Maybe he's tired of the same old dynamics. In fanfiction, sometimes the relationships in Team 7 can be written in a very repetitive way. For example, Sasuke's brooding and Sakura's one - sided love for Sasuke can become overdone, making Naruto feel sick of it all. Also, if the fanfiction focuses too much on the team's conflicts without any real development, it could be a reason.
He could be sick of it because of how the fanfiction portrays him within the team. If he's constantly made to be the underdog or the one who has to fix all the problems in Team 7, it might get tiresome for him. He might want a break from always being the glue that holds the team together in these fictional stories.
One reason could be that the fanfiction often portrays the characters in a very different way from how he knows them. For example, if it changes their personalities too much, it might make Naruto feel like it's not the same team he belongs to. Another reason could be the overuse of certain plot devices in the fanfiction. Maybe every story he reads has the same cliché situations, like the team always getting into the same type of trouble in a very predictable way. Also, if the fanfiction focuses too much on relationships that Naruto doesn't see as important within the team, it could put him off.
Maybe Naruto is sick of Sakura in fanfiction because her character is often portrayed as too pushy or one - dimensional. In some fanfictions, Sakura might be overly obsessed with Sasuke and Naruto just gets tired of her constantly going on about it.
Well, in the fanfiction, perhaps Naruto realizes that Konoha's politics are too complex. There are always hidden agendas and power plays. He, being a straightforward person, might get tired of all the behind - the - scenes stuff. Also, he may feel that his friends are changing because of Konoha's influence. For example, they might be more focused on the village's reputation rather than their true feelings, which makes Naruto sick of it all.
In fanfiction, Naruto could feel sick due to overusing his chakra. He often pushes himself to the limit in battles and training, and this excessive chakra use might take a toll on his body, making him feel ill.
Perhaps Naruto quits Team 7 in the fanfiction because of a betrayal. He might find out that one of his teammates has been secretly working against him or has lied to him about something really important. This could shatter his trust in the team and make him want to leave. Or it could be due to an accumulation of small incidents. Like constantly being the one to get in trouble for the team's mistakes, or not having his opinions heard when it comes to team strategies. Over time, these little things can build up and make him feel that he's better off on his own.
One possible reason could be miscommunication. Maybe Naruto misunderstands something Team 7 members say or do. For example, if they seem to be excluding him from a plan without a good explanation. Another reason might be stress. Naruto has a lot on his plate, and if Team 7 accidentally adds to his burden in the fanfiction, he could snap. Also, personal growth differences. If Naruto is growing in a different direction than the rest of Team 7 and they don't understand or support him, it could lead to him snapping at them.
Perhaps Naruto is being influenced by an outside force. It could be an enemy who has tricked him into believing that his team is holding him back. Or it could be that he has fallen into a dark state of mind, like if he has some kind of mental breakdown due to all the pressure he has faced in the past. In this state, he might just push Team 7 away without really meaning to in the long run.
In some fanfictions, Naruto could be mad at Team 7 if there was a new member added and he felt replaced. He has a deep bond with Sasuke, Sakura, and Kakashi, and any disruption to that dynamic might lead to anger. Also, if the team made a decision without consulting him, like choosing a mission target without his input, that could be a cause for his anger.
Another reason could be the lack of trust he feels from his teammates in some fanfiction scenarios. If Sasuke is constantly keeping secrets or Sakura is doubting Naruto's abilities, it can make him feel isolated within the team and eventually tired of being part of it.
One reason could be that Naruto has his own independent goals. He's always been determined to become Hokage. Maybe the team's goals don't align with his. For example, if the team is more focused on short - term missions for money rather than long - term village development like Naruto wants.