He might meet the spirit of an ancient ninja who was the keeper of the library. This spirit could guide Naruto through the library and teach him things that no one else in the present day knows.
Perhaps in this fanfiction, the secret library is guarded by some sort of magical or powerful entity. Naruto, being Naruto, would try to befriend it first. Once inside, he could find prophecies about the future of the ninja world written in the books. This knowledge might put him on a new path of preventing future disasters and bringing about a new era of peace in the ninja world.
I recall a fanfic called 'Sentient Library: Naruto's New Ally'. In it, the sentient library is a sort of magical entity that has been observing the ninja world for ages. When Naruto finds it, it offers him knowledge that was lost over time. It shows Naruto different historical events through magical books, which gives him an edge in battles and also in understanding the politics of the ninja villages.
It could have Naruto discovering long - lost jutsu in the Uzumaki library. Maybe some ancient scrolls that hold the secrets of powerful chakra control techniques.
Well, he could gain new powers. Maybe the sentient library has books that teach him long - lost jutsu or give him knowledge about the nature of chakra that no one else in the ninja world knows. For example, he might learn how to combine different elemental chakra in a completely new way.
Some Naruto - centered forums might also be a good place to look. Fans often share their fanfictions there. You can engage with the community, ask if anyone has come across a fanfiction about Naruto finding the Uzumaki library, and they might be able to point you in the right direction.
One common plot is Kushina finding Naruto in a different time or dimension. For example, she might end up in the future where Naruto has grown up and she gets to see the kind of person he has become. It's an emotional and interesting concept as she gets to witness all his achievements and the challenges he has overcome.
To contribute to Naruto Library Fanfiction, first, you need to be familiar with the Naruto universe. This includes knowing the characters, their abilities, and the overall world - building. Then, start writing your own story. Make sure it has an interesting plot and engaging characters. You can submit your work to the relevant platforms, following their submission guidelines.
Yes, there are likely fanfictions out there with this concept. Fanfiction writers often like to cross over different popular franchises. Naruto and Pokegirl are from two very different universes, so it makes for an interesting and unique combination in fanfiction. You can try searching on popular fanfiction websites like FanFiction.net or Archive of Our Own to find such stories.
One idea could be that Naruto mistakes the spaceship for a really strange summon. He tries to communicate with it using his ninja skills, like sending chakra signals, thinking it's some sort of new, unknown creature. This could lead to all sorts of comical misunderstandings as the spaceship's technology reacts in unexpected ways to his attempts.