The main characters could be a young, career - driven woman named Emma and a laid - back artist named Jack. Emma has been so focused on her job that she hasn't had time for love, especially during the Christmas season. Jack, on the other hand, is always looking for inspiration and finds it in Emma when they meet by chance at a Christmas market. They start off as friends but quickly develop deeper feelings as they share Christmas traditions with each other.
Perhaps it could be a college student named Lily and a foreign exchange student named Leo. Lily is feeling a bit homesick during Christmas break as she stays on campus. Leo, who is from a different country and doesn't really understand all the American Christmas traditions, teams up with Lily to experience it all. They become closer as they bake Christmas cookies, exchange gifts, and attend the campus Christmas party. And in the process, they fall in love.
Arya might be another main character. As an elf, she could bring some of the elven Christmas traditions to the other races. She could be in charge of decorating the big Christmas tree in the central square of a major city in Alagaesia, using her elven magic to make it the most beautiful tree ever.
Often, there is a protagonist who is in the central relationship. This character might be a young person, perhaps a student or someone starting out in their career. Their boyfriend is another main character, and he could have a complex personality, like being both loving and possessive at times.
Bella and Edward are very likely to be the main characters. They are the central figures in the Twilight series, and a Christmas Eve fanfic would probably still revolve around them. Their relationship could be the focus, like how they celebrate Christmas Eve together.
One possible plot could be that a girl who has always been single during Christmas wishes upon a star one night. The next day, she meets a charming stranger who seems to be perfect for her. As they spend time together during the Christmas season, they discover they have a lot in common, like their love for hot chocolate and Christmas carols. They face a small conflict when the girl's overprotective best friend is suspicious of the new guy, but in the end, they realize they are in love and have the best Christmas ever together.
The main characters would obviously include the boyfriend who gets resurrected and the person seeking revenge for him. There could also be the antagonists, those who caused the harm to the boyfriend in the first place.
Santa Claus himself could be a character. He could be taking a test ride of his new sleigh, making sure it can handle all the presents for the children around the world.
A lonely old man could be a main character. He might be someone who has lost his family or friends over the years and has become bitter. But during the Christmas story, he could find new meaning in his life through an unexpected encounter.
The office grinch - someone who hates Christmas for some reason, like they had a bad experience in the past. But through the kindness and holiday spirit of their colleagues, they change their attitude. And of course, the office party planner who is trying to make everything perfect for the Christmas celebration.
Perhaps there is a male lead who is the potential boyfriend. And there could be other characters like teachers or parents who play roles in either supporting or opposing the idea of having a boyfriend in school. For example, a strict teacher might not approve of students dating in school and that could create some conflict in the story.
In the fanfic, Yamcha could be her ideal boyfriend again. They have a history together, and in this new story, they could rekindle their relationship. Yamcha has become more mature and has learned from his past mistakes. He could now support Bulma in her scientific endeavors and be a more reliable partner. He also has some combat skills, which could come in handy when they face threats together in the Dragon Ball world.