It could also be a sparring session gone wrong. Naruto might be training with the Konoha 12, but his new and powerful techniques are too intense. This causes the others to feel threatened and they end up in a full - on fight. Naruto would then have to control his power and show his friends that he doesn't mean to harm them.
Perhaps there is an outside force influencing the Konoha 12 to fight Naruto. A powerful enemy could be using some kind of mind - control or illusion on them. Naruto would have to figure out how to break the spell on his friends while also fending off their attacks. He would be in a difficult position, as he doesn't want to hurt his comrades but also has to protect himself.
One possible plot is that there is a breach between the Naruto universe and the Hellsing universe. This causes chaos as demons from Hellsing start to invade Konoha. Naruto, being the hero, tries to figure out how to stop them. Alucard arrives, not entirely as an ally at first. But as they both realize the common threat, they join forces. Naruto learns about the different nature of the enemies from Alucard and adapts his ninja skills accordingly.
Perhaps the fanfiction could focus on Naruto's adjustment to the new environment in Konoha. He'd have to get used to the different training facilities, local customs among the ninja clans, and the overall layout of the village. For example, he might struggle at first to find his way around the various training grounds and meet - up spots for ninja teams. But as he explores, he discovers hidden gems in the village and forms closer bonds with the villagers.
Well, it could be about Naruto being wrongly accused and turning against Konoha. Maybe some false evidence is planted against him, making the villagers see him as a threat. So he decides to oppose Konoha to clear his name.
In a 'naruto conquers konoha fanfiction', perhaps Naruto could be pushed to the edge by the corrupt system in Konoha. He might decide to take over to bring real change. He could use his powerful jutsu and the loyalty of his friends to overthrow the old regime and install a more just rule.
In a dark 'naruto executed by konoha fanfiction', it could be that Konoha, fearing Naruto's power, decides to execute him. Maybe they believe false rumors spread about him. It's a very tragic and dark take on the Naruto universe.
The fanfiction could focus on Naruto's married life in Konoha. Maybe his wife is a powerful ninja in her own right. Together, they could train the next generation of Konoha ninjas. Their relationship could be a source of inspiration for the young ninjas. Naruto's return with his wife could also bring new diplomatic relations to Konoha if his wife has connections to other villages.
One possible plot could be that Konoha Village has to reclaim Naruto after he has been lost in a mysterious dimension. The villagers might realize his importance more than ever and send out a team of elite ninjas, including Sasuke and Sakura perhaps. They would face numerous challenges in this other dimension, like strange new jutsus and powerful enemies. Along the way, they would also discover new things about Naruto's powers that even he wasn't aware of.
Well, perhaps Naruto could be framed for a crime in Konoha and then be forced to leave as an assassin. He might start working for an enemy village at first, but then gradually realizes that there's a deeper conspiracy behind his framing. So he decides to clear his name and also protect Konoha in the end.
Well, one possibility is that Naruto's son is very powerful and has unique abilities. When they return to Konoha, the villagers are both amazed and a bit worried about this new generation of power. Naruto might have to deal with the elders who are cautious about his son's potential. And his son could start making friends quickly with the kids in Konoha, like Boruto did in the original series.
One possible plot could be that Naruto is pushed to the brink by the village's constant mistreatment. The Kyuubi, sensing Naruto's anger and despair, influences him to turn against Konoha. They could start by attacking key strategic points in the village, like the Hokage's office and the ninja academy, causing chaos and destruction.