Brandon Stark is a very important character. He has the power of the Three - Eyed Raven. He starts as a young boy full of curiosity. After many hardships like the fall of his family, he goes on a journey of self - discovery and power - gaining. He witnesses a lot of the dark secrets and power plays in Westeros through his visions.
In the 'Game of Thrones' series, there is no clear indication of a romantic love story between Brandon Stark and Meera. Their relationship is more of a comradeship. Meera helps Bran on his journey, protecting him and being his companion as he discovers his powers and his role in the larger events of the story.
It could be a northern girl, someone who Brandon met during his travels in the North. Maybe she was a daughter of a minor lord, and they fell in love while he was on a mission to secure the North's borders.
Well, in fanfiction, the story could be about how Brandon Stark's son grows up in a post - Game of Thrones world. Maybe he has to deal with the remaining political unrest. He could be trained in the ways of the North, learning how to be a strong leader like his father.
Arya Stark is one of the most beloved characters from 'Game of Thrones'. She is initially presented as a bit of a tomboy, not conforming to the ladylike standards of her society. As the story progresses, she becomes a key player in the power struggles of Westeros. She is brave, resourceful and has a very distinct personality that makes her stand out among the many characters in the series.
One great fanfic could be about Arya Stark rebuilding Winterfell as the last Stark. It might explore how she uses her skills she learned during her travels to bring back the glory of her family's home. She could train new guards, establish trade routes, and make Winterfell a stronghold again.
In some fanfics, Arya Stark might be presented as the last Stark, but it really depends on the specific plot and direction the fanfic author takes. There could be plot twists where other Starks are revealed to still be alive.
Bran Stark's story is one of great transformation. He starts as a young boy full of curiosity. After his fall and becoming a cripple, he discovers his warging ability, which allows him to enter the minds of animals. Later, he trains with the Three - Eyed Raven and gains the power to see the past and future, playing a crucial role in the fight against the Night King and the overall fate of Westeros.
It could be a bastard child of a Stark that was kept hidden for some reason. Maybe for fear of political ramifications or because of some dark family secret.