Another plot could be about their wedding planning. Since they are from different backgrounds, there could be cultural clashes. For example, Cinder might have some traditions from her side that Kai's people find strange, or vice versa. And they have to find a way to incorporate both cultures into their big day while also making sure their families and kingdoms are happy. It could be a really sweet and comical story as they struggle with things like choosing the right wedding dress or the proper ceremony format. Also, there could be some jealous suitors from the past who resurface and try to break them up, adding some drama to the story.
A more adventurous plot could involve them going on a honeymoon that turns into a quest. Maybe they discover a hidden threat to their kingdoms while traveling and have to use their combined skills and the power of their love to defeat it. Along the way, they learn more about each other and their relationship deepens. They might face challenges like dangerous creatures, difficult terrains, and even some magical elements if their story has a fantasy aspect. This would not only be an exciting adventure but also a way to show how their marriage is a partnership in all aspects of life.
Perhaps they could face some family drama. Like, Kai's over - protective family visits and they have different ideas about how Kai and Hilary should live their lives. Hilary has to prove herself to them and in the process, Kai and Hilary grow even closer as they support each other through this difficult time.
One possible plot twist could be that there are complications during the pregnancy. Maybe there are health issues for Cinder that Kai has to deal with while also handling his royal duties. This could put a strain on their relationship as they struggle to come to terms with the situation.
One interesting story could be where Cinder and Kai have a baby who shows extraordinary intelligence from a young age, inheriting Cinder's strong will and Kai's leadership skills. The baby might play a key role in bringing about new technological advancements in their world.
One idea could be Cinder being transported to an alternate universe within the RWBY world where the roles are reversed. For example, she could find herself in a world where she is a huntress in training, facing the same challenges as the main characters but from a different perspective. Another plot could involve a team - up between Cinder and a group of RWBY characters against a common, greater enemy that threatens both their goals and the world. Maybe a new, powerful Grimm that has abilities they've never seen before.
One idea could be a time - travel plot where a character goes back to the original Karate Kid era and tries to change the events that led to the Cobra Kai dojo's current state. Another could be a story focused on a new student at the Cobra Kai dojo who has a unique fighting style that challenges the traditional teachings. Maybe a fanfiction where two rival characters from different dojos have to team up to face a common enemy outside of the karate world.
You can try searching on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. Just type in 'Cinder and Kai married' in the search bar, and it should show relevant stories.
Another plot could involve the main character in the fanfiction realizing that they got married too young and now they are having second thoughts. This could lead to a series of self - discovery and relationship - testing events. For example, they might meet someone new who makes them question their marriage, but in the end, they realize the value of their relationship.
A more emotional plot could be that they discover they have a shared past that they were unaware of. Maybe they both had a connection to a certain character who was important in their lives before they became who they are now. This revelation makes them question their own paths and they start to see each other in a new light, leading to a tentative alliance and exploration of their similarities and differences.
One idea could be that Sofia and James are from different social classes. They face many challenges from their families and society in general when they decide to get married. But through their love and determination, they slowly break down the barriers and build a happy life together.
A really interesting plot could be Erika and Kyoya starting a new business together as a married couple. They would face challenges like financial difficulties, competition, and differences in their business approaches, all while trying to keep their marriage strong. This would show their relationship in a different light, not just as a romantic couple but as partners in a more practical sense. There could be scenes of them brainstorming ideas, arguing over decisions, and then making up in a really sweet way. It would add a lot of depth to their relationship and make for an engaging fanfiction.