Sure. You can check out some fanfic platforms like Archive of Our Own. There are likely numerous nozomi x maki fanfics there. Just use the search function and type in 'nozomi x maki' to find them.
One common theme is friendship turning into something more. Since they are friends in the original series, fanfiction often explores the idea of their relationship evolving romantically.
Some of the best nozomi x maki fanfiction can be found on Archive of Our Own (AO3) as well. It has a large collection of fan - created works. You might want to look for stories with high ratings and a lot of kudos, which usually indicate good quality.
Another theme is the exploration of their different personalities. Nico's energetic and sometimes bossy nature combined with Maki's more reserved and wealthy - girl - with - a - secret - passion personality can create interesting story dynamics. For example, a fanfic might focus on how Nico tries to break through Maki's reserved shell.
The theme of overcoming obstacles is also quite common. It could be things like dealing with family expectations, or differences in their future plans. In many fanfics, they have to work through these issues to be together. And of course, the theme of the power of love, how their love for each other helps them face any difficulties that come their way.
One common theme is friendship. Many fanfics focus on how they become friends and the things they do together. For example, going to school events or just hanging out.
Some themes that are often seen in nozomi x elaichi fanfic are those of transformation. For example, they could transform in some way, either physically or in terms of their personalities, and how they deal with that change together. Another theme is that of mentorship. One could be a mentor to the other, guiding them through difficult situations. There can also be a theme of celebration, like celebrating a festival together and the experiences they have during that time.
Some popular 'honoka x maki fanfic' include 'A Shared Dream'. This fic focuses on their shared aspirations and how they work towards them together. 'Heartbeats in Sync' is also a good read. It has a really nice build - up of their relationship from friendship to something more. And 'Colors of Their Love' which uses vivid descriptions to show the different aspects of their relationship.
Fanfiction.net is also a great source. However, the quality can vary. When looking for nico x maki fanfic there, you might need to sift through some to find the really good ones. Some might focus on their friendship evolving into a romantic relationship, while others could be more about their adventures together within the context of their fictional world.