One possible plot could be that Emi and Nozomi are in a school setting. They start off as strangers but are paired for a project. As they work together, they discover they have a lot in common, like their love for art. They face some challenges from other students who are jealous of their budding friendship, but in the end, they become best friends and support each other's dreams.
It could also be through conflict. Suppose Emi accidentally ruins Nozomi's important project. Nozomi is initially angry, but as they work to fix the situation, they understand each other better. Emi realizes how much the project meant to Nozomi, and Nozomi sees Emi's good intentions. This event becomes a turning point in their relationship, making it stronger.
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.
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.
Since lemon fanfics usually contain adult - like content which is not suitable to promote, I would suggest you search for regular eri x nozomi fanfics. Try using tags on platforms such as FanFiction.net. You might find some great stories that focus on their friendship, adventures or emotional bond without any improper elements.
You can try fanfic websites like Archive of Our Own. It has a large collection of fan - created works, and there's a good chance you'll find some great nozomi x elaichi fanfic there.
Some fanfics may focus on the theme of self - discovery. Nozomi and Eli could be on a path of understanding themselves better, and their relationship helps in this process. There might also be a theme of mystery, like they are trying to solve a mystery within their idol group or in their personal lives, and their combined efforts bring them closer. Additionally, a theme of cultural exchange can be interesting, as they come from different backgrounds and share their cultures with each other through their relationship.
You can try some popular fanfic websites like Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms, and there's a good chance you'll find nozomi x eli lemon fanfic there. Just use the search function and type in the relevant tags.
The popularity of 'the devil is a part timer emi x maou fanfic' mainly lies in the interesting relationship between Emi and Maou in the original work. Fans are eager to see more of their interactions and how their relationship could develop further in fan - created stories.