It could be that in this fanfiction, Naruto is on a different team altogether. Team Seven then has to prove themselves without the comparison to Naruto. They might face an identity crisis at first, wondering if they can be as successful as they were expected to be with Naruto. But as the story progresses, they discover their own strengths and build a new reputation for Team Seven that is separate from Naruto's shadow.
One possible plot could be that Team Seven is formed with different members, like Sasuke, Sakura, and a new character. This new character might have a special ability that changes the dynamics of the team. They could face different challenges without Naruto's unique skills and positive energy. For example, in battles, they might struggle more as Naruto often provided a boost in morale and unexpected strategies.
Maybe the story focuses on how Team Seven functions in a more serious and strategic way without Naruto. Sasuke could become the sole leader, and Sakura would have to step up in a different way. Their missions might be more focused on stealth and intelligence gathering rather than Naruto's more action - oriented approach. Without Naruto, the team might also have a different relationship with other characters in the Naruto universe, such as Kakashi having to adjust his teaching methods completely.
One possible scenario is if Naruto is constantly blamed for the team's failures. For example, if every mission that goes wrong is pinned on Naruto, even when it's not his fault, he might start to hate the team. This could be due to a misperception by the other members or a malicious plot within the fanfiction world.
One possible plot could be that Naruto is forced to leave Team 7 due to false accusations against him. Sasuke might then go on a solo mission to prove Naruto's innocence. Sakura, feeling guilty for not standing up for Naruto, decides to train harder to be able to bring Naruto back. And Kakashi, caught between the village's decision and his loyalty to Naruto, tries to find a way to reverse the situation.
There could be a fanfiction where Team Seven is brainwashed or under some sort of mind control. As a result, they turn on Naruto and attack him. This would be extremely hurtful to Naruto, both physically and mentally. He would be confused as to why his friends are suddenly trying to harm him and it would shatter his trust in them.
In this fanfiction, perhaps the old Team 7 is framed for a crime they didn't commit. Naruto takes it upon himself to clear their names. He starts by investigating the real culprits, which leads him into the underbelly of the ninja world. Along the way, he discovers secrets about the past that could change the way they all view each other. He might find out something about Kakashi's past missions that were related to the current situation. Sasuke and Sakura could be in hiding, but Naruto convinces them to come out and help him prove their innocence. The story could end with Team 7 being exonerated and their reputation restored.
In some fanfictions, Naruto might be depicted as hating Team Seven due to a miscommunication. For example, if Sasuke is written as constantly undermining Naruto within the team and Sakura always takes Sasuke's side, it could lead to Naruto feeling isolated and developing negative feelings towards the team.
In Naruto's world, Naruto killing Team 7 is a very dark and out - of - character concept. However, in fanfiction, it might be possible if Naruto was somehow corrupted. Maybe he was influenced by a powerful and evil force that twisted his mind and made him turn against his closest friends. But this goes against everything Naruto stands for in the original series.
One possible reason could be a conflict within the team. Maybe Naruto felt misunderstood by Sasuke or Sakura. Another reason might be a mission gone wrong where Naruto blames himself and decides he's a liability to the team. Or perhaps he gets an offer from another group that he believes can help him achieve his goals faster.
One possible plot development could be Naruto leaving due to a misunderstanding. For example, if he is wrongly accused of a crime within the team. Another could be that he feels he is holding the team back in some way and decides to leave on his own to become stronger alone. Maybe he has a personal goal that he believes he can't achieve while still being part of Team 7.
It could be because of a dark curse. Suppose Naruto was cursed by an ancient evil. This curse slowly ate away at his sanity and made him view his friends in Team 7 as threats. As the curse took over more and more, he finally reached a point where he killed them. However, this would require a lot of backstory and character development in the fanfiction to make it somewhat believable.
Well, a possible scenario could be Naruto on a team with Hinata and Rock Lee. Hinata's gentle and shy nature would be an interesting contrast to Naruto's boldness, and Rock Lee's hard - working and energetic attitude would add more fun to the team. They could go on missions where Hinata uses her Byakugan to scout, Rock Lee takes on the physical combat, and Naruto uses his clones for various strategies.