Perhaps he could ask some of his more well - read friends in the ninja world who might have some sort of magical or technological means of accessing other fictional universes' fan works. Another option could be to visit some local libraries in the hidden villages that might have some sort of secret section for fan - created works from other worlds. However, this is all very far - fetched and in the realm of fun speculation.
It could be about Naruto teaming up with the Survey Corps to fight against a new threat that combines the powers of the Titans and some of the powerful ninja enemies from the Naruto world. For example, they might face off against Orochimaru - like Titans that can use snake - based jutsus.
One possible fanfiction could be about Kushina finding Naruto in a situation where he's lost in a forest. Maybe she uses her unique chakra sensing abilities to track him down. It could be a heartwarming story of a mother reuniting with her son.
One possible scenario in this fanfiction could be that Naruto discovers an ancient and mysterious shrine in the forest. The shrine might hold some sort of power or secret. Maybe it has a connection to the Sage of Six Paths. Naruto, being his curious self, would likely start to explore it. He might find strange markings or artifacts inside that he has never seen before.
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.
If Naruto was an Armored Titan in a fanfiction, he'd be a force to be reckoned with. His speed and agility as a ninja would likely transfer to the Titan form, making the Armored Titan much more mobile. He could also use his Rasengan in the Titan form, maybe by concentrating chakra into the Titan's fist.
One idea could be that Naruto somehow gets transported to the world of Attack on Titan and gains the power of the Armored Titan. He might use his ninja skills in combination with the Titan's strength. For example, his shadow clone jutsu could be used to create distractions while the Armored Titan attacks enemies head - on.
You can try websites like Fanfiction.net or Archive of Our Own (AO3). On Fanfiction.net, you can simply search for 'Kushina finds Naruto' in the search bar and it will show you a list of relevant fanfictions. AO3 also has a large collection, and their tagging system can help you narrow down your search to find exactly what you're looking for.
There are various scenarios that could play out in such a fanfiction. Maybe Naruto was injured during a mission and Kiba stumbles upon him in the forest. Kiba would then likely try to help Naruto, either by getting medical help or using his own skills if he has some knowledge of healing. This could lead to a deeper bond between them as Kiba shows his concern and Naruto is grateful for the assistance.
It could be that the zanpakuto was brought into Naruto's world by some sort of interdimensional rift. Naruto, being curious and always eager to grow stronger, is immediately drawn to it. His godlike perception allows him to sense the latent power within the zanpakuto. He might seek out help from characters who have some knowledge of different power systems, like Kakashi. Together, they could try to decipher the mysteries of the zanpakuto, leading to Naruto adding yet another powerful tool to his already impressive arsenal.