If Naruto was a Lannister in a Game of Thrones fanfiction, he'd be a very different kind of Lannister. He'd probably use his ninja skills to protect the family in ways they've never seen before. Instead of the usual backstabbing, he might bring in a sense of loyalty and honor that the Lannisters lack. He could use his jutsu to make the Lannister stronghold more secure, like creating barriers with his earth - style jutsu.
There could be a fanfiction that focuses on an alternate universe where Tywin survives longer. In this story, he would have to deal with the changing political landscape after the events at King's Landing. He might try to regain control of the situation, perhaps by making alliances with unexpected parties. His character would be forced to adapt to new threats and challenges, which could lead to some very interesting plot developments.
One great 'Game of Thrones Tywin Lannister Fanfiction' is 'The Lion's Legacy'. It delves deep into Tywin's past, showing his rise to power in a very detailed and engaging way. The author does an excellent job of portraying his complex personality.
I really liked 'Jaime Lannister: A Different Path'. In this fanfiction, Jaime decides to side with the Starks early on. It's an interesting take as it completely changes the course of his character in a believable way. There are some great character interactions that are not in the original show.
Power is a very common theme. The Lannisters are known for their lust for power in the original series, and fanfictions often explore how they gain, maintain, or lose power. Family loyalty is another. Despite their many flaws, the Lannisters have a strong sense of family loyalty, and this is often a central theme in fanfictions.
Consider their upbringing. If they were raised away from the main Lannister stronghold, they might have a different set of values. Maybe they were raised by a kind - hearted servant who taught them to be more empathetic. So their personality could be a mix of Lannister pride and this new - found empathy. They could be conflicted between loyalty to their family and doing what is right according to their own conscience.
Perhaps an OC Lannister who is a talented healer. In a world full of wars and battles in Game of Thrones, a healer Lannister could be an interesting addition. They might have to deal with the moral dilemma of healing both their own family's enemies and allies. They could also have a secret love affair with a member of another house, which would add a layer of drama.
In the Game of Thrones novels, Tyrion Lannister remains alive. His character undergoes many challenges and developments but doesn't meet his end. The author has kept him as an important part of the ongoing narrative.
In a Naruto - Lannister Game of Thrones fanfiction, the story could start with Naruto being transported to the Game of Thrones universe and adopted by the Lannisters. Naruto's sense of justice would immediately clash with the Lannisters' self - serving ways. For example, he would not stand for the way they treat the smallfolk. He might try to use his ninjutsu to improve the lives of the common people, which would draw the ire of other power - hungry nobles. His relationship with the other members of the Lannister family would be complex. He could befriend Tyrion, who also has a sense of justice that is often suppressed. However, characters like Cersei would see him as a threat to her power and try to eliminate him.
Another place could be Wattpad. There are many fanfiction writers on there who might have written something about the Lannisters in the context of Game of Thrones. However, it may take some time to sift through the numerous works to find specifically what you're looking for regarding Taiwan and the Lannisters.