Another plot idea might be a story where the White Walkers and the humans form an uneasy alliance. This could be due to a common enemy that emerges, like a new magical threat from Essos. The characters would have to overcome their deep - seated hatred and distrust to work together, which would create a lot of interesting character development.
One interesting plot idea could be a character who was thought to be dead actually surviving and secretly plotting revenge. For example, a minor character who was presumed killed in a battle but managed to escape and now is working with an unexpected ally to change the power dynamics in Westeros.
Perhaps a plot where a commoner rises to power through manipulation and cunning in the world of 'game of thrones cyoa fanfiction'. This commoner uses their knowledge of the streets and the weaknesses of the nobles to gradually gain influence and wealth, and eventually challenges the established lords for control of the Seven Kingdoms.
One idea could be exploring what would happen if a minor character like Gendry had been secretly trained in magic. He could use his newfound powers to unite the smallfolk against the warring nobles. Another plot could revolve around a female knight from the North who disguises herself as a man to fight in the wars, and along the way, she discovers secrets about the White Walkers that no one else knows. Or perhaps a fanfiction where Daenerys and Sansa form an alliance much earlier and together they reshape the power dynamics of Westeros.
A really cool 'Game of Thrones fanfiction' plot could involve the resurrection of some of the dead characters in a different way. For example, what if Ned Stark was brought back not as a vengeful wraith but as a wise advisor to a new king or queen? His honor and wisdom could shape the future of Westeros in a completely new direction. And it would be interesting to see how the other characters react to his return.
Perhaps a fanfiction where Daenerys Targaryen lands in Westeros earlier and forms an alliance with the Starks before the events of the main series. This would completely shift the political landscape and the fight for the Iron Throne. She could bring her dragons to help fight the White Walkers from the start.
One idea could be exploring what would happen if a minor character, like Gendry, had a more central role in the fight against the White Walkers. He could lead a group of common folk and prove that the power doesn't always lie with the nobles.
A really unique plot idea in naruto cyoa fanfiction could be that Naruto is sent back in time to the era of the Sage of Six Paths. He could then learn directly from the originator of ninjutsu and change the course of ninja history in ways we can't even imagine. This would also give him a chance to understand the true nature of chakra much earlier and perhaps prevent some of the future conflicts in the Naruto universe.
One idea could be a wizard who uses magic to bring back characters from the dead in a way that completely alters the power dynamics in Westeros. For example, bringing back Ned Stark and having him lead an army of the resurrected against the White Walkers.
A really interesting plot would be if the Night King from Game of Thrones was actually a dark bender from the Avatar world who was banished there long ago. And the only way to defeat him is for the Avatar to travel to Westeros and use all four elements against him. Along the way, the Avatar has to deal with the different kingdoms and their power struggles, just like in the original Game of Thrones story. This would bring in a whole new dynamic of having an outsider with strange powers trying to save a world that is foreign to them.
One idea could be reincarnating as a minor character, like a servant in King's Landing. You could use your modern knowledge to avoid the chaos of the city and slowly rise in power by befriending key players. Maybe you know of some herbal remedies that could save a noble from a deadly illness and gain their favor.
One idea could be a story where the Starks form an unexpected alliance with the Greyjoys to take on the Lannisters. They could use the Iron Islands' naval power and the Stark's knowledge of the North's terrain to launch surprise attacks.
A cool plot might be an avatar from a different world being brought into the Game of Thrones world and having to adapt to its politics and power struggles. This avatar could have unique abilities that make them a valuable asset or a feared enemy. For example, they could have the ability to read minds, which would give them an edge in the cut - throat world of Westerosi politics. They could either side with a noble house or try to create their own power base.