One interesting plot could be that Naruto is somehow transported to the Sekirei world. He discovers the Sekirei ship and is initially confused. But his natural curiosity and his ninja skills help him to quickly adapt. He might start to form alliances with some of the Sekirei, using his combat experience to protect them from threats that they face in their world.
A cool plot could be that Naruto is on a mission in his own world and stumbles upon a strange energy source. This energy source turns out to be a portal to the Sekirei world and the Sekirei ship. Once there, he meets the Sekirei and realizes that there are similarities between their struggles and those of his friends back home. He decides to help the Sekirei with their 'Ashikabi' situation while also trying to find a way back to his own world. Along the way, he teaches the Sekirei some of his ninja techniques and in return, they teach him about their unique powers.
I'm not sure of a specific 'naruto finds the sekirei ship fanfic' off the top of my head. You could try searching on fanfic websites like FanFiction.net or Archive of Our Own. They have a large collection of fanfictions and you might be able to find one with that specific plot there.
One possible plot could be that Naruto somehow gets involved in the Sekirei Plan while still having the power of the Juubi within him. He might use his ninja skills and the Juubi's power to protect the Sekirei from those who would use them for evil purposes. For example, he could face off against Minaka Hiroto, the creator of the Sekirei Plan, if he discovers that the plan is causing harm to the Sekirei. Naruto's values of friendship and protecting the weak would likely drive his actions in this fanfic scenario.
Maybe Naruto finds a ship that has crashed on the shore. Inside, he finds survivors from a far - off land. This could lead to a story about cultural exchange and new alliances in the Naruto universe. He might have to protect these strangers from other threats in the shinobi world while also learning about their ways.
A possible plot could be that a group of evil forces in the Sekirei world sense Naruto's god - like presence and try to either capture or kill him. Naruto, being Naruto, decides to protect the Sekirei instead. He teams up with some of the strongest Sekirei and they form an alliance. As they fight together, Naruto starts to teach the Sekirei about friendship and loyalty, values that are important in his ninja world. This not only changes the Sekirei's perspective on life but also makes them stronger as a group. And along the way, Naruto might even fall in love with a Sekirei, which would add a romantic sub - plot to the story.
Well, the world - building in 'naruto sekirei fanfic' can be quite fascinating. The fanfic might blend the settings of the two universes, like the hidden villages from Naruto and the modern - day Tokyo - like setting of Sekirei. This creates a whole new backdrop for the story. Also, the character development is often interesting. Characters from both series can grow and change in ways that are different from their original storylines, which can add depth to the fanfic.
The plot could involve Naruto characters somehow ending up in the Sekirei world. Maybe Naruto, with his never - give - up attitude, would get involved in the Sekirei battles. He could use his ninja skills to protect the Sekirei from other dangerous forces. And perhaps some of the Sekirei would be intrigued by Naruto's chakra and his unique abilities.
One idea could be a crossover where characters from Naruto and Sekirei meet in a unique situation. For example, Hinabi could find herself in the Sekirei world and have to adapt to its rules while also using her ninja skills. Another idea is a story that focuses on Hinabi's training in a Sekirei - like setting, with new challenges and opponents that test her limits. Maybe she could form an unexpected alliance with a Sekirei character.
A possible plot is that there's a new threat that combines the dark forces from Naruto, like the Akatsuki, and the antagonists in Sekirei. Naruto and Miya Sekirei have to put aside their differences and work together. Maybe they start by sharing their respective combat techniques. Naruto could teach the Sekirei about chakra control, while the Sekirei could show Naruto some of their unique powers that could be useful in combat against this new threat.
One idea could be that Naruto, with his skills and determination, finds himself in the Sekirei world. He could form bonds with different Sekirei, like how he did with his friends in the Naruto world. Maybe he helps them in their battles and in the process, they all develop feelings for him.
I'm not entirely sure specifically as there could be many different 'naruto sekirei sage fanfic' stories. Generally, it might combine elements from Naruto, Sekirei, and perhaps the concept of a sage. It could be about a crossover where characters from Naruto and Sekirei universes interact in a story that also involves sage - like powers or characters.