What are some interesting ideas for an 'attack on titan kaiju fanfic'?

A great idea for an 'Attack on Titan' permanent titan fanfic would be to focus on the relationship between a permanent titan and a human. It could be a story of an unlikely friendship or a situation where the human is trying to study the titan to gain some sort of advantage in the fight against the other titans. The fanfic could also delve into the emotional and psychological aspects of the titan, if it has any remnants of its former human self, and how it copes with its existence.

The plot could involve a conflict within the group of titan shifters because of the tenth titan. Some might see it as a threat, while others believe it's the solution to end the war. The tenth titan's power could be something that disrupts the balance between the different factions. For example, it could have the ability to nullify the powers of other titans, which would make it a highly sought - after and dangerous power.

One interesting idea could be setting the story in a modern world where Titans are a result of a scientific experiment gone wrong. The characters could be part of a special military unit using modern weapons and technology to fight them. For example, they might use drones for surveillance and high - powered rifles. Another idea is to have the story focus on the psychological impact of living in a world with Titans on modern - day civilians, exploring themes like fear, paranoia, and survival in a society that's constantly under threat.

One idea could be an OC who is a Titan Shifter with a unique ability like being able to control the elements while in Titan form. For example, they could create ice storms or fire blasts. Another could be an OC who has to struggle with the morality of being a Titan Shifter in a world where Titans are seen as pure evil. They might try to find a way to coexist with the other humans instead of just fighting Titans.

One interesting idea could be a character going back in time to prevent the initial titan invasion. They might use their knowledge of future events to change strategies and save more lives. For example, if Eren knew from the start how to better fight the titans, he could have trained the soldiers more effectively.

Perhaps in the fanfic, Godzilla and the Titans are from the same ancient origin. There could be some kind of prehistoric event that split them into two different species. The story could follow Eren or another main character from 'Attack on Titan' who discovers this connection and tries to use it to either stop the Titans or get Godzilla on their side to fight the Titans. This could involve a lot of exploration into the past, like looking at ancient records or ruins that hint at this shared origin.

One interesting idea could be exploring Eren's potential even as a baby in the context of the Attack on Titan world. Maybe showing how his early experiences, even as a baby, might shape his future determination against the Titans.

One idea could be a fanfic where the main character has a unique power to communicate with the kaiju. This would add a new dimension to the story as they could try to negotiate with the kaiju instead of just fighting them.

One interesting plot idea could be about a group of modern - day people suddenly finding themselves in a world similar to that of Attack on Titan. They have to quickly learn the skills of survival, like using the 3D maneuver gear which they discover in an abandoned military base. Another could be a fanfic where the Titans exist in a parallel modern world, and a secret organization has been fighting them in the shadows all along.

One idea could be exploring an alternate world where the Titans have different abilities. For example, some Titans might be able to fly or control the elements. Another plot could revolve around the characters from the original 'Attack on Titan' being transported to a completely different world with its own set of rules and threats. Maybe in this new world, the Survey Corps has to form alliances with strange new creatures to fight against a common enemy.