You can start by looking on fanfiction.net. It has a large collection of fanfics from various fandoms, including ones about Makoto and Haruka. Just use the search bar and type in their names, and you'll get a list of relevant stories.
I really like the fanfic titled 'Beyond the Pool'. In this story, they go on an adventure outside of their usual swimming environment. It's interesting to see how they handle new situations and how their relationship evolves in different settings. There are some really heart - warming moments that make it a great read.
Another characteristic is the exploration of their relationship in different scenarios. It could be a story where they face a crisis together, or a story where they go on a journey outside of their normal swimming - centered world. These scenarios help to show different aspects of their relationship, whether it's loyalty, trust, or a budding romantic connection.
You can try fanfiction.net. It has a large collection of fanfics from various fandoms, including ones related to Haruka Nanase. Just use the search bar and type in 'haruka nanase x reader' and you should be able to find some interesting reads.
One idea could be a story where the reader is a new swimmer on the team and Haruka helps them improve their skills. They start with simple training sessions, and gradually a deep friendship forms between them. Along the way, they face challenges like tough competitions and rivalries within the team.
Writing fanfic that involves sexual content is not appropriate in many contexts. It goes against ethical and moral standards, especially if the characters are from a work aimed at a general or younger audience. Such content can also be disrespectful to the original creators and the fans who enjoy the work in a non - sexualized way.
A common theme is friendship that develops into something more. Since Haruka is often portrayed as a bit aloof at first, the stories usually show how the reader gradually breaks through his barriers and they become closer.
A really interesting Makoto x Haruka fanfic I've read is 'The Unspoken Promise'. It delves into the unspoken feelings between them. The story is set in a very realistic high - school - like setting which makes it easy to relate to. It shows how their relationship could potentially grow over time, with Makoto always being there for Haruka and Haruka slowly opening up more to Makoto.
In their story, Haruka might influence the reader in terms of their lifestyle. For example, if the reader is a bit lazy or unorganized, seeing Haruka's strict training regime and healthy habits could prompt the reader to make positive changes. Also, Haruka's calm and collected demeanor during competitions could teach the reader how to handle pressure better, not just in swimming but in other aspects of life as well. Haruka is a role model in the swimming world, and the reader could look up to him and try to emulate his positive traits. This could lead to the reader becoming more confident, disciplined, and goal - oriented in their own life.
One common theme is friendship - turned - love. Since they start as friends in the original work, many fanfictions explore how their relationship deepens into romantic love. Another theme is the support they give each other. For example, in some stories, Haruka's quiet nature is balanced by Makoto's more outgoing and caring side, and they help each other through personal struggles.