In this fanfiction scenario, it could be set in an alternate universe where Hiruzen didn't die. Naruto, having grown powerful, might be in a conflict of ideologies with Hiruzen. Naruto, with his more modern and inclusive views, could clash with Hiruzen's more traditional ways. This leads to a fight where Naruto tries to prove his point through combat, using his new and improved jutsu that he developed through his own unique training methods.
One possible plotline could be that Naruto is somehow transported back in time and has to fight Kushina in a misunderstanding. Maybe he's mistaken for an enemy due to some time - warp magic or jutsu gone wrong. Another could be a scenario where Kushina is controlled by an evil force, and Naruto has to fight her to break the control. Or perhaps it's a sparring match in a dream world where Naruto and Kushina test each other's skills without real harm.
In this fanfic, it could be a fight in an alternate universe where Naruto and Hinata belong to rival clans. Their clans' long - standing feud forces them to fight each other. However, during the fight, they start to realize that the feud is baseless and they might even develop a new understanding of each other and their clans' history.
Maybe in the fanfiction, there were some political motives. Hiruzen might have been pressured by other hidden villages. They could have threatened Konoha if Naruto, as the Nine - Tails' jinchuriki, remained in the village. So, to avoid a potential war or conflict, Hiruzen made the difficult decision to banish Naruto. Also, it could be due to a misunderstanding. Naruto might have been in the wrong place at the wrong time during an incident, and Hiruzen misjudged the situation.
Maybe Naruto is put in a situation where he feels that Hiruzen's way of handling things is the best option. For instance, if there is a major crisis in the village that requires a more traditional and experienced approach, Naruto might choose to act like Hiruzen. Also, he could be influenced by the stories he has heard about Hiruzen and wants to fill his shoes in a way.
Perhaps it's a training exercise that gets out of hand. In the world of Naruto, intense training often mimics real battles. If they were sparring and emotions ran high, it could turn into a full - fledged fight. Also, Sakura might be trying to prove herself to Naruto, and Naruto, not understanding her intentions, might respond aggressively.
The plot could also involve a time - related crisis. Maybe something is threatening the timeline, and the only way to fix it is for future Naruto to raise his younger self in a certain way. So, future Naruto has to make sure that the younger Naruto grows up to be strong enough to face this threat while also maintaining the integrity of the timeline.
One possible plotline could be that Naruto somehow ends up in Akeno's world. They meet and at first Akeno is a bit shy around Naruto. Naruto, with his positive attitude, gradually befriends her. They could go on adventures together, like facing some common enemies in Akeno's realm. Naruto's ninja skills would be very useful in such situations.
One possible plotline could be that Naruto is in a life - threatening battle against a powerful enemy. Gaara arrives just in time, using his sand powers to shield Naruto from a fatal attack. Then they team up, with Gaara's strategic thinking and Naruto's unwavering determination, they gradually turn the tide of the battle.
One possible plotline could be that Naruto is somehow mind - controlled. Maybe an enemy uses a powerful genjutsu on him, making him see the Konoha 12 as threats to the village instead of comrades. This would lead to a tragic situation where Naruto, in his altered state of mind, attacks them.
Perhaps the plot could start with Yugito initially being a normal acquaintance of Naruto. But after some incident, like Naruto saving her life, her feelings turn into a yandere - like obsession. She then starts following Naruto everywhere, much to his confusion at first. As the story progresses, Naruto has to figure out how to deal with her obsessive behavior without hurting her feelings too much, while also maintaining his own goals and relationships.