Finding such a fanfic can be a bit tricky. You could start by checking popular fanfic websites like Archive of Our Own (AO3). They have a large collection of fan - made stories, but you'll need to use their search function and look specifically for 'Makoto Naegi x Fujisaki' fanfics. Another option might be FanFiction.net, though their content policy and tagging system might make it a bit more difficult to locate exactly what you're looking for.
Well, in many cases, it might revolve around the relationship between Makoto and Fujisaki. It could start with their initial interactions, perhaps in the context of the Danganronpa world. Then, as the story progresses, the 'lemon' part might involve some sort of romantic or more intimate moments between them. But it really depends on the writer's interpretation and the direction they want to take the story.
One idea could be that the OC is a new student in the Danganronpa world and Kirigiri takes it upon herself to protect the OC from the various dangerous situations. Maybe the OC has a special ability that catches Kirigiri's attention and they team up to solve the mysteries around them.
Most 'haruka x makoto' fanfictions tend to explore their relationship in a platonic or emotional way, such as their loyalty to each other, their shared dreams. But 'lemon' fanfiction, if it exists, would deviate from this by introducing sexual undertones. This is not only against the norms of many fan communities but also goes against the essence of the original characters which are usually seen as positive role models in a more innocent context.
Swimming is also a big theme. Given that they are all swimmers, many stories will involve them training, competing, or having some kind of revelation related to their swimming careers. For instance, a story could be about how Rin's new training technique inspires Haru and Makoto to improve their own skills.
Growth is also a frequent theme. Both Makoto and Yukari might grow as individuals because of their relationship. For instance, they could become more confident or learn to be more understanding. And of course, the theme of love, whether it's a budding romance or a deep, long - standing love, is very common in these fanfictions.
Give them common goals. In the Danganronpa world, survival and solving mysteries are key. If the OC and Kirigiri both have a strong drive to figure out what's going on in the school, they will be forced to work together. As they overcome obstacles in their investigations, their relationship will naturally grow. For instance, they might have to rely on each other's unique skills to get out of a dangerous situation. Also, show their flaws and how they accept each other's imperfections. Maybe the OC is a bit impulsive at times and Kirigiri is overly cautious, but they learn to balance each other out.
You can start by looking on popular fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions from various fandoms, including ones for haru x makoto. Another option is FanFiction.net, which also has a good number of stories about them.
One popular haru x makoto fanfiction might be 'A New Beginning'. It delves into their relationship post - high school, exploring how they support each other in their new careers. Another could be 'Summer Days Revisited' which focuses on their shared memories during their teenage years and how those memories strengthen their bond as they grow older. There's also 'The Unspoken Promise' where the author beautifully portrays the unspoken understanding between them.
The theme of mutual support is quite common. They both have their own insecurities and challenges, and fanfictions often explore how they help each other overcome those. For example, Haru might be struggling with his emotions, and Makoto is there to support him, and vice versa. Also, stories about their future together, like what they do after high school or in their adult lives are also popular.