Perhaps in the fanfiction, Naruto discovers a hidden secret about his family that gives him an edge in his fight back. For example, he might find out that his family had a special connection to a powerful force or technique, and he uses this knowledge to gain strength and take on his foes. This could involve him having to train hard to unlock this potential within himself.
In some fanfictions, Robin might fight Batman due to a misunderstanding. For example, Robin could be misled by a villain's false information, thinking Batman has turned to the dark side. Another plot could be a power struggle within the Bat - family, where Robin wants more independence and challenges Batman's authority.
Another plot could involve a power struggle. Since both Jason and Percy are powerful demigods, there could be a situation where they are competing for a certain power or a leadership role within the demigod community. This competition could escalate into a physical fight.
In some fanfictions, Naruto might come back with a different attitude. Maybe he has seen so much during his time away that he is more mature and philosophical. This new Naruto could inspire the younger generation in Konoha to be better ninjas, not just in terms of power but also in their way of thinking.
Well, one possible plot could be that Naruto is forced back due to a new threat emerging in Konoha that only he can help with. Maybe an old enemy has resurfaced and the village elders believe Naruto's power is essential to combat it.
One interesting plot could be Naruto Uchiha using his future knowledge to prevent the Uchiha massacre. He might try to change the minds of the village elders and stop the cycle of hatred before it spirals out of control.
One interesting plot could be that female Naruto goes back in time and uses her knowledge from the future to prevent the destruction of her village. She might try to stop certain villains from emerging or change the fates of her friends who died in the original timeline. For example, she could stop Orochimaru's early evil plans, which would have a huge impact on the story's development.
In this type of fanfiction, a great plot can be Naruto going back and influencing the Third Hokage's decisions. For example, he could convince the Hokage to be more open - minded about new techniques and alliances. He might also focus on improving the living conditions in the village at an earlier stage. By doing so, he could potentially change the future of the entire Hidden Leaf Village and the shinobi world in general.
One interesting plot could be Kurama using his knowledge from the future to prevent certain tragedies in Naruto's past. For example, he might stop Orochimaru's early attacks on Konoha more effectively. Another plot could be Kurama helping Naruto train earlier and more efficiently, leading to Naruto becoming much stronger at a younger age. And perhaps Kurama could also change some of the relationships within the village, like improving Naruto's standing among the villagers much sooner.
One plot could be that Naruto is held back because of a misunderstanding about his heritage. The village elders might believe that there are dangerous aspects to his Uzumaki bloodline that they don't fully understand, so they limit his training and growth. This could lead to Naruto having to prove himself not only to his friends and comrades but also to the very people who are holding him back. He might have to go on a journey to discover the true nature of his bloodline and in the process, break free from the restraints placed on him.
One interesting plotline could be Naruto having to face Pain alone without any backup from the village. This would really test his strength and determination. Another could be Naruto finding a way to defeat Pain without using his full Nine - Tails power, relying more on his ninja skills and strategy.