One common theme is friendship development. Since they are characters from the same universe, many fanfics explore how their friendship could grow deeper over time. Another theme is adventure. Writers might create scenarios where they go on quests or face challenges together.
You can start by looking on fanfiction platforms like Archive of Our Own (AO3). It has a large collection of fanfics across various fandoms. Just search for 'Toshiki Kai x Misaki Tokura' and you'll likely find a good number of stories. Another option is FanFiction.net, although the quality can be a bit more variable there.
Love and friendship are likely to be common themes. Since it's about a relationship between two characters, the fanfiction might explore how they fall in love, or how their friendship develops into something more.
One common theme is the development of their relationship. Writers often explore how they get to know each other better, overcome obstacles in their relationship, like misunderstandings or differences in their personalities or backgrounds.
One common theme is the exploration of their relationship's development. It often shows how they grow closer over time. Another is the struggle with their different personalities, with Misaki being more reserved and Usagi being more outgoing. And of course, there are often themes of love and loyalty.
Since 'lemon' often refers to sexual content, if we assume non - inappropriate common themes, it could be about the development of their relationship, from initial attraction to deeper emotional connection. Maybe themes like overcoming differences or dealing with external pressures in their relationship.
One common theme could be the relationship development between Usagi and Misaki during the pregnancy. It often explores how they deal with the changes in their lives and emotions.
Another theme is the continuation of their playful relationship. Usui might still playfully tease Misaki, but now it has a different flavor since they're married. It's about how their initial dynamic is maintained and enhanced in a married state. For instance, in some fanfictions, Usui surprises Misaki with romantic dinners at home, which is a new aspect of their relationship. They also might deal with in - laws or family expectations in some stories, which adds a new layer to their relationship.
One common theme is the discovery of love. Yata Misaki is often portrayed as initially unaware of his feelings for the reader, and then there's a journey of self - discovery as he realizes his love. For example, in many fics, a simple interaction might trigger his interest and start this journey.
One common theme could be teamwork. Since Ben has his unique alien forms and Kai has her own abilities, they can team up in interesting ways in fanfiction. Another theme might be friendship development. They start off as acquaintances perhaps, and the stories could show how they become closer friends over time.
Friendship is also quite common. They could support each other through difficult times, like in training or dealing with personal issues. Another theme might be self - discovery. Maybe through their relationship, they both learn more about themselves and their capabilities. There could also be stories about them achieving their dreams together, which is a very positive and inspiring theme.