Well, Naruto's ninja skills would be quite a shock to the AoT world. He could probably use his Shadow Clone Jutsu to confuse the Titans. Maybe he'd team up with the Survey Corps and teach them some new combat moves. His chakra control might also give him an edge in using the ODM gear more effectively.
She might find herself in the middle of the battle against Titans. Maybe she uses her modern knowledge, like basic first aid or some scientific concepts, to help the characters in the fanfiction.
Well, there's 'Titan - Shinobi Alliance'. This one is quite interesting as it imagines a scenario where the characters from Naruto and Attack on Titan form an alliance. The story has some great action scenes where ninjas and the Survey Corps work together. It also explores the cultural differences between the two groups, which makes for a very engaging read.
One possible scenario could be Naruto using his godlike powers to quickly assess and counter the Titans. His ability to sense danger and move at high speeds would make him a formidable force against the Titans. For example, he could use his shadow clones to distract the Titans while he goes for the kill with a Rasengan.
One common theme is the clash of different powers. Naruto has his ninja powers like jutsu and chakra, while Attack on Titan has the ODM gear and Titan - shifting abilities. So, in many fanfics, there's a focus on how these powers interact when the characters from both worlds meet.
In a Juubi Naruto Attack on Titan fanfiction, Naruto could form an alliance with Eren. Naruto's ability to sense danger and his superhuman strength would be a great asset. He could teach Eren some of his ninja techniques, like how to better control his Titan form. Maybe Naruto could even find a way to use his Sage Mode to understand the Titans better.
One great 'Attack on Titan' fanfiction with a Titan reader is 'Titan's Perspective'. It delves into how a reader - turned - Titan experiences the world within the walls. It offers a unique view of the familiar 'Attack on Titan' universe, exploring the inner thoughts and struggles of a Titan, which is something not often explored in the original series.
One popular fanfiction idea could be a story where Eren has to team up with the Female Titan against a new, more powerful enemy in the world of Attack on Titan. Maybe they start off as reluctant allies, but as they face challenges together, they begin to understand each other better and develop a unique bond.
One possible plot could be that Naruto and his friends somehow end up in the world of Attack on Titan. Naruto's ninja skills would be really useful against the Titans. For example, his shadow clone jutsu could be used to distract the Titans while the Survey Corps tries to attack their weak points. Also, Sasuke's sharingan might be able to see some hidden details about the Titans that the people in the Attack on Titan world don't know. It would be an epic adventure as they combine their powers to fight the common enemy - the Titans.
Well, he could use his ninja skills to fight the Titans in a really cool way. Maybe he'd show the Survey Corps some new combat techniques. For example, his Shadow Clone Jutsu could be used to confuse the Titans while the soldiers attack from different directions.