Another plot idea could involve the Kage of Whirlpool having a unique jutsu or power that Naruto must learn in order to defeat a new, powerful enemy. This could lead to a training arc where Naruto travels to the Whirlpool lands and discovers the secrets of this power with the help of the Kage's spirit or an old disciple.
A more complex plot could be that the Kage of Whirlpool was involved in a prophecy that Naruto is now a part of. This prophecy could be about uniting the ninja world in a new way, and the Kage's knowledge and abilities are crucial for Naruto to fulfill it. Naruto has to uncover the truth about the prophecy by delving into the history of the Whirlpool Village and the Kage's role in it.
One idea could be Naruto using his unique skills to revive the once-great Whirlpool Village. He might introduce new ninja training methods inspired by his own experiences in Konoha. Another could be him dealing with the political intrigue of other villages who are either threatened or intrigued by a new, powerful Kage in the Whirlpool. Maybe he uncovers long - lost secrets of the Whirlpool's past that have the potential to change the ninja world as we know it.
One idea could be a story where a new, unknown shinobi suddenly shows kage - level skills and challenges the existing kage system. This shinobi might have a unique power that the current kage have to figure out how to deal with.
A plot could revolve around a mysterious threat that targets the Kages during the summit. It could be a long - forgotten enemy or a new dark force. The Kages have to put aside their differences and work together to face this threat. They might also discover some secrets about their own villages in the process of fighting this common enemy.
A rogue ninja from the Whirlpool Village who resents the Kage and wants to take over the village's power. He could see Naruto as an obstacle in his path to domination, especially if Naruto is trying to help the current Kage or revive the village.
One idea could be a character from the Naruto universe obtaining the Kage Kage no Mi. They could use its powers to create shadow clones with unique abilities that are different from the normal shadow clones in Naruto. For example, these clones could have the power to manipulate shadows in ways not seen before, like using them to create illusions or even solidify shadows into weapons.
One idea could be exploring the lost history and secrets of the Land of Whirlpool. Maybe the main character discovers an ancient jutsu that was once unique to the land. Another could be a story about a character trying to revive the glory of the Land of Whirlpool after it has been in decline.
One idea could be a secret alliance formed during the Kage Summit that was not in the original story. Maybe a Kage has a hidden agenda and is secretly working with an enemy of the village. For example, the Mizukage could be in cahoots with a rogue ninja group to gain power over the other villages.
A possible plot could be a time - travel story within the 'naruto kage oto fanfiction' world. The protagonist travels back in time and meets the previous generations of Kage. They then learn important lessons from them that they can use to change the future of the village. Or perhaps a story where different villages' Kage have to team up against a common enemy that is so powerful it requires their combined strength and knowledge.
Definitely, the Akatsuki members who have reformed could be potential allies. They have unique powers and knowledge of the ninja world. Naruto's ability to see the good in people might lead him to recruit some of them. Additionally, the toads from Mount Myoboku could be allies, providing their prophetic knowledge and combat support when needed. And, of course, his old friends from Konoha like Kiba and Choji would come to his aid if the situation called for it.
A plot could involve the Princess of Whirlpool being the key to restoring an ancient bond between the Hidden Leaf and the Whirlpool Country. Naruto, being the hero of the Leaf, is tasked with escorting her safely. Along the way, they face challenges that test their friendship and Naruto discovers that the princess has a prophecy related to his own destiny.