A possible plot for Haruhi x Mikuru fanfiction could be that there is a mysterious force in the school that only affects them. They have to work together to figure out what it is and how to stop it. It could also be a story about how Mikuru tries to introduce Haruhi to some of her own hobbies, like a particular type of music or art, and how Haruhi's reaction changes their relationship. Another idea is a story where they are paired up for a project and during the process, they learn a lot more about each other than they expected.
One idea could be a time - travel adventure where Mikuru has to take Haruhi to a different era to save the future of their club. Another could be a story where they get lost together during a school trip and have to rely on each other to find their way back. Maybe a plot where they accidentally switch bodies and have to deal with each other's lives for a day.
Kyon could be a great addition. He often has an interesting perspective on Haruhi's antics and his interactions with both Haruhi and Mikuru could add depth to the story. Also, Yuki could be included. Her stoic nature contrasts with Haruhi's exuberance and Mikuru's more timid personality, creating some interesting dynamics.
Well, there could be a plot where a new student arrives who is a potential rival for Haruhi's attention among the hosts. This new student tries to out - charm Haruhi and the hosts have to defend their friendship with her. Another interesting plot is that the host club is given a task by the school principal to put on a play, and Haruhi and the hosts have to write, direct and act in it. They face all sorts of problems during the production, like disagreements over the script, costume malfunctions, but in the end they put on a great show.
A plot could involve the father of the baby being a mysterious character. This would add an element of mystery and drama to the fanfiction. Haruhi could then embark on a journey to find out more about the father while also dealing with the physical and emotional changes of pregnancy. It could also show how the other characters in her life try to help her in this search.
One common theme is the exploration of their different personalities. Kyon is often sarcastic and a bit jaded, while Mikuru is sweet and naive. Fanfictions usually play on how these two personalities clash and then eventually find common ground.
One plot idea could be that they initially struggle with the news of the pregnancy. Haruhi might be worried about how it will affect her studies and her future, while Kyoya has to deal with the reactions from his family. They could then gradually grow closer as they face the challenges together.
Maybe X - 23 is on the run from some anti - mutant forces and finds herself in Gotham. Batman initially suspects her but then realizes she's being hunted unjustly and decides to help her. They then have to fight off the hunters while also dealing with Gotham's regular villains.
A plot where 707 and MC get trapped in a virtual world that is a distorted version of their own reality. They need to find a way to escape by solving puzzles and relying on each other's unique skills. For example, 707's hacking abilities could be crucial in finding glitches to break free.
A common plotline is the two of them learning to communicate better as a married couple. Haruhi, being straightforward, and Kyoya, often keeping his thoughts to himself. In the fanfiction, they might have to overcome this communication gap. For example, Haruhi might misunderstand Kyoya's attempts to do something nice for her as him being controlling. And they have to work through these issues to have a successful marriage. There could also be a story where they deal with jealousy, perhaps from other characters who have feelings for either Haruhi or Kyoya.
Well, there could be a plot where Tamaki loses his memory and Haruhi has to make him fall in love with her all over again. It could show a different side of their relationship, with Haruhi being more proactive in winning Tamaki's heart. There are also fanfictions where they get into a big misunderstanding that takes a long time to resolve, which adds a lot of drama to the story.
One popular 'kyon x mikuru fanfiction' is 'A Different Perspective'. It offers a unique take on their relationship, exploring how Kyon's cynical nature interacts with Mikuru's shy and mysterious personality. It's a great read if you like character - driven stories within the fanfiction realm.