Another theme is self - discovery. Through their interactions, both characters may learn more about themselves. Akashi might discover a more patient side of himself when dealing with Furihata, and Furihata could become more confident by being around Akashi. It's like they bring out the best in each other.
A third plot could be a more fantastical one. Imagine they both get transported to a magical world. Akashi, with his natural leadership skills, tries to find a way back home, while Furihata is a bit scared but also curious. They meet various magical creatures and have to work together to overcome obstacles. As they do so, their relationship deepens. Akashi protects Furihata from dangerous situations, and Furihata's kindness and unique perspective help Akashi see things in a new way.
Yes, there are quite a few. You can start by looking on fanfiction websites like Archive of Our Own. There you might find various stories that explore different aspects of the relationship between Akashi and Furihata. Some could be focused on their friendship evolving into something more, while others might be set in alternative universes where they interact in unique ways.
One common theme is the exploration of their contrasting personalities. Furihata is often seen as more laid - back and Akashi as very intense, so how they interact and influence each other is a big theme. Another is the theme of growth. As they get closer, they might help each other grow as individuals.
One aspect to consider in an Akashi Seijuro x OC fanfic is the character development. Akashi is a complex character in the original work, and when paired with an original character (OC), the writer has the opportunity to explore new sides of him. The relationship between Akashi and the OC can be built in various ways, such as starting from a rivalry and evolving into a deep emotional connection. For example, the OC could be a new player on his team who challenges his leadership at first but then earns his respect. Another important part is the setting. If it's set in the world of the original anime, it can add authenticity. Writers can also introduce new elements to the story, like a special tournament or a unique training method that affects their relationship.
Archive of Our Own (AO3) is a great place to start. It has a large collection of fanfiction from various fandoms, including stories about Akashi and Furihata. You can search for their names in the search bar and filter the results according to your preferences, like rating or word count.
A common plotline is the 'fish out of water' story. The OC could be a transfer student who is new to Akashi's world of intense basketball and strict discipline. This creates a lot of interesting situations as the OC tries to adapt and Akashi is intrigued by this new person. Another popular one is the 'forbidden love' plot. Maybe there are social or team - related reasons why Akashi and the OC shouldn't be together, but they can't resist their feelings for each other.
A common theme is friendship development. Since they are from the same series, stories often explore how their relationship grows from just being acquaintances to something deeper.
There are some really good Furihata x Akashi fanfictions out there. A lot of them explore the dynamic between the two characters in unique ways. For example, some stories might have them working together on a project in their school or club, which leads to a deeper connection. You could also try asking in fan communities dedicated to the series they are from. Fellow fans might be able to recommend some hidden gems that you won't find easily on general search engines.