Maybe a fanfiction where a young scientist discovers a way to communicate with Godzilla. They form an unlikely bond and together they protect the world from other dangerous monsters. This would add an interesting human - kaiju relationship aspect to the story.
A plot could revolve around Godzilla's origin being more deeply explored in a fanfiction. What if there was a long - lost civilization that had a connection to Godzilla's creation? This could open up a whole new world of mystery and adventure in the fanfiction.
One idea could be a story where Godzilla teams up with other kaiju to fight a new, more powerful alien threat. This would be exciting as it shows Godzilla in a more collaborative role.
One idea could be Godzilla teaming up with other kaiju from different universes to fight a common, powerful enemy. Maybe an alien force that is threatening all kaiju-kind.
One idea could be a story where Godzilla and King Ghidorah have to team up against an even greater threat from outer space. This would force their natural enmity aside as they realize the common danger.
Perhaps Naruto, as the King of Monsters, has to deal with the prejudice from his own people who fear the monsters he commands. This could lead to a journey of self - discovery and proving that the monsters can be a force for good. He could start by using the monsters' unique abilities to help with village construction or resource gathering, slowly changing people's minds.
One idea could be that Harry discovers he has the power to control monsters deep in the Forbidden Forest. He uses this new ability to protect Hogwarts from a dark wizard who is summoning dangerous creatures.
A fanfiction could explore the idea of Shin Godzilla having a more sentient side. Maybe it tries to communicate with humans through some form of telepathy. The story could then revolve around the humans trying to understand what Godzilla is trying to say and if they can co - exist. For example, Godzilla might be warning about an upcoming natural disaster that only it can sense due to its connection with the earth.
One idea could be that they team up to protect their offspring from other monsters. It would show a more nurturing side of these usually fearsome creatures.
One plot idea could be that Godzilla somehow gets transported to the Star Wars universe. Maybe the Empire tries to capture and weaponize it, leading to a big showdown between the rebels and the Empire over Godzilla.
One idea could be a story where Mechagodzilla is initially built to protect the city from Godzilla, but then they discover a common enemy that forces them to team up. Maybe an alien force arrives that threatens both of them and the planet. So they have to put aside their differences and fight together.
One idea could be a story where Godzilla teams up with other kaiju from different universes to fight a new, super - powerful alien threat. This would bring in a whole new level of epic battles and interactions between the various monsters.
One idea could be that Godzilla, as a human, has to hide his true identity while trying to understand human emotions. He might struggle with the concept of love and friendship, which are very different from his previous existence.