One way is if they swap roles for a day. Mutsumi tries to act like Kae, being more outgoing and bubbly, while Kae tries to be more reserved like Mutsumi. This role - reversal can make them see things from each other's perspective. They might laugh at each other's attempts at first, but then they'll understand each other better and it can deepen their relationship.
They could start a secret project together, like creating a hidden garden on school grounds. As they work on it in secrecy, they share secrets and dreams, which deepens their bond.
One common theme could be the development of their relationship. Maybe how they first get to know each other better.
One common theme is the development of their relationship. Writers often explore how Mutsumi and Kae gradually get closer and understand each other better.
Yes, there are some. You can start by checking fanfiction websites like Archive of Our Own. There might be various stories exploring the relationship between Kae and Mutsumi in the 'kiss him not me' universe.
A plot could involve Kae accidentally getting into trouble at school and Mutsumi comes to her rescue. This leads to a series of events where they end up spending more time together than usual. They start to study together for an important exam, and during those study sessions, they realize they have a lot in common. They might also have some disagreements about study methods, but in the end, they find a way to work together and their relationship evolves.
Another option is Tumblr. There are many anime fans on Tumblr who create and share fanfictions. Use relevant tags like '#KissHimNotMe', '#Mutsumi', '#Kae' and '#MutsumiKae' to narrow down your search for the fanfiction you're interested in.
A unique way to develop their relationship could be through shared dreams. Maybe they start having the same dreams where they are in a different world or time. In these dreams, they have to work together to solve problems, and when they wake up, they find that their connection in real life has also strengthened. This would be a very different and somewhat magical approach.
One common theme could be friendship. Maybe the fanfics explore how mutsumi and kae's friendship develops over time. Another theme might be adventure, with them going on some exciting journey together.
I'm sorry I don't have specific mutsumi x kae fanfic to recommend directly. You could try searching on fanfiction websites like Archive of Our Own. There are often many fan - created stories for various pairings, and you might be able to find some great mutsumi x kae fanfics there.
In 'Kiss Him Not Me' fanfiction, Shinomiya and Mutsumi's relationship can be really interesting. They might have a slow - burning kind of connection. Shinomiya's reserved nature could contrast with Mutsumi's more easy - going self, creating a dynamic where they gradually learn to understand and care for each other on a deeper level.