One interesting Tywin fanfiction could be one that delves into his early years and how he rose to power. It might explore his relationships with his father and the events that shaped his cold and calculating nature.
There are fanfictions that focus on an alternate universe where Tywin has to face different challenges. For example, a scenario where he has to deal with a powerful and united northern alliance instead of the fragmented kingdoms he usually contends with. This would force him to use different strategies and alliances, which makes for an exciting read.
One interesting scenario could be Arya disguising herself as a servant in Tywin's camp. She could overhear his strategic plans and use that information to her advantage later. Maybe she even manages to steal something important from him without him realizing it was her.
One plot idea could be that Arya, in her guise as a servant in King's Landing, catches Tywin's attention not for her identity but for her sharp intellect. Tywin, always on the lookout for useful tools, begins to test Arya in subtle ways. For example, he might ask her opinion on various political matters in a veiled attempt to see if she has any insights that could be of use to him. Another idea is that Arya, while still hating the Lannisters, realizes she can use Tywin to gain access to information that could help her in her long - term revenge plans. She has to balance her hatred and her need for secrecy while Tywin remains oblivious to her true nature.
Arya and Tywin could also interact in a more unexpected way. Maybe in a situation where they are forced to work together for a short time due to some external threat. During this time, Arya has to constantly remind herself of her ultimate goal of revenge while Tywin is constantly on guard against her, yet also seeing potential in her skills for his own purposes.
One interesting Viserys fanfiction could be one that explores his early days before the events of the show. It might show his relationship with his family in more depth. For example, how he interacted with his siblings and what his dreams were for the future of his house. Another could be a fanfiction where Viserys survives and has to face the consequences of his actions in a different way, perhaps learning from his mistakes and trying to redeem himself. A third could be a fanfiction that delves into a romantic relationship for Viserys that was never explored in the original series, giving a new dimension to his character.
One interesting 'Dragonstone' fanfiction could be about the secrets hidden within the castle before the events of the main series. Maybe it focuses on an unknown Targaryen who once lived there and left behind clues to a powerful weapon or magic.
Another type of fanfiction could focus on the origin of the dragons. It might explore how they were created, perhaps by an ancient and forgotten magic. This could involve delving into the history of Valyria and the secrets that led to the birth of these magnificent beasts.
One interesting fanfiction could be those that explore alternate endings. For example, a fanfic where Jon Snow manages to unite the Seven Kingdoms in a more peaceful way without so much bloodshed. Another could be about the backstories of minor characters, like what really happened to Syrio Forel after he left Arya. There are also fanfictions that focus on different relationships, such as a more in - depth exploration of the friendship between Tyrion and Varys.
In some Lys fanfictions, the focus could be on the unique culture of Lys. Writers might explore how the Lysene way of life, with its different religions, social norms, and arts, impacts a story set in the 'Game of Thrones' universe. For instance, a Lysene artist might come to King's Landing and use his art to either inspire or deceive the people there.
One interesting 'Game of Thrones Blackfyre' fanfiction could be one that delves into the backstory of the Blackfyre family before the events of the main series. It might explore their rise to power and the reasons for their subsequent fall. Another could be a fanfiction where a Blackfyre heir resurfaces during the main events of 'Game of Thrones' and tries to reclaim the Iron Throne, causing new political turmoil in Westeros.
A possible fanfiction could involve Kakashi being a member of a secret order in 'Game of Thrones' that protects the realm from threats that are not just political but also magical. He teams up with some of the more honorable characters in the series, like Jon Snow perhaps, and they go on adventures to fight off dark forces that are starting to rise in the land.