One plot idea could be a Naruto - style ninja having to team up with a demi - titan to protect their village from a new, powerful enemy. The demi - titan's brute strength combined with the ninja's skills would make for an exciting story.
The plot could involve Naruto having demi - titan powers. Maybe he discovers this heritage in a hidden part of his family's past. He then has to learn to control these new powers while still dealing with the normal Naruto - universe threats like Akatsuki.
A plot could revolve around a hidden village within the Naruto universe that has been secretly studying Titan powers for generations. A young ninja from this village embarks on a journey to find out more about their origin. Along the way, they meet other Naruto characters and together they uncover secrets about both the Titans and the ninja world that could change everything. This could involve epic battles and unexpected alliances.
One idea could be that Fem Naruto, with her ninja skills, helps the Survey Corps in a unique way. Maybe she uses her shadow clone jutsu to create distractions during Titan attacks. For example, she could send clones to draw Titans away from the main group while the Scouts make a strategic move. Another plot could involve her teaching some of the characters in Attack on Titan her chakra control techniques, which could potentially be used to enhance their ODM gear usage.
Perhaps the friendly titan is a protector of a certain area outside the walls that the humans have not explored much. The story could be about the Survey Corps making an alliance with this titan. The titan guards the area from other dangerous titans, and in return, the humans help the titan when it gets injured. This could lead to a whole new understanding of the titan world and how they can co - exist with the friendly ones.
The chakra powers of Naruto characters could potentially enhance or disrupt the natural powers of demi - titans. For example, a Sharingan - user might be able to predict the movements of a demi - titan better, or a jutsu could be used to temporarily immobilize a demi - titan.
A survival - themed plot could be interesting. For example, the Titan submarine could get stranded in an unexplored part of the ocean. The crew then has to deal with limited resources, strange underwater phenomena, and their own internal conflicts as they try to find a way to be rescued.
Another idea is that the Queens Titan has a past connection to a long - lost civilization. As the story unfolds, it uncovers secrets about this civilization that change its perception of itself and its role in the world. It could involve solving ancient mysteries and facing challenges set by the remnants of that civilization.
One idea could be that the Titans are somehow related to the Tailed Beasts in the Naruto world. Maybe they were created as a result of an ancient jutsu gone wrong. Another idea is to have characters from Attack on Titan gain ninja abilities. For example, Eren could learn how to use Rasengan and use it against the Titans. Or perhaps Naruto and his friends end up in the world of Attack on Titan and have to fight the Titans using their ninja skills.
One idea could be exploring an alternate timeline where the main characters have different Titan powers. For example, Eren could have the Colossal Titan's power from the start. Another could be a story centered around a new character who joins the Survey Corps and has a unique ability to communicate with Titans on a deeper level. Maybe they try to find a peaceful coexistence with the Titans instead of just fighting them all the time.
A really cool idea for Armored Titan crossover fanfiction would be to have it cross over with a world of superhumans. The Armored Titan's abilities would be put to the test against those with super speed, strength, or mind - control powers. The story could explore how the Armored Titan tries to fit into this new world, whether it becomes a hero or a villain, and how it deals with the complex politics and power struggles among the superhumans.