A common theme is friendship - turned - love. They start as friends and gradually develop deeper romantic feelings. Another theme is mutual support. They help each other through tough times, like Haru being there for Ryuji when he has family issues or Ryuji giving Haru confidence in social situations.
Some ryuji x haru fanfiction might focus on how they support each other's growth. For example, a story could show Haru helping Ryuji with his studies while Ryuji encourages Haru to be more assertive in her personal and social life. You can search for such fics by using relevant tags on fanfiction platforms.
One common theme could be redemption. Given Kamoshida's actions in the game, fanfic might explore his path to redemption in relation to Ryuji. Another theme could be friendship or an unlikely bond forming between them.
One common theme is friendship turned into love. Since they are likely friends in the original story, fanfiction often explores how that relationship deepens into romantic love.
Often, there are themes of adventure. Haru might go on adventures with water as a sort of guiding or powerful force. For example, he could be exploring underwater worlds or using water to overcome obstacles in a magical journey. This type of theme can make for very exciting stories.
One common theme is friendship evolving into something more. Writers often explore how Kazu and Haru's relationship deepens over time, from just being friends to having romantic feelings. Another theme could be adventure. They might go on adventures together and through those experiences, their bond gets stronger.
One great Rin x Haru mermaid fanfiction is 'Under the Sea's Embrace'. It beautifully weaves the mermaid lore with their relationship. The author creates a vivid underwater world where Rin, as a mermaid, discovers a connection with Haru that goes beyond the ordinary. It has some really touching moments that show their bond in a unique way.
One common theme is growth. They often start as two very different individuals, and through their interactions, they grow both personally and in their relationship. For example, Hibari might be more reserved and Haru more outgoing, and they learn from each other's traits.
Yes, there might be. The world of fanfiction is vast and diverse. With the popularity of both Harry Potter and the concept of Ryuji Jakkan (assuming it's a known or created concept), it's very likely that some fans have combined them in their creative works. However, it may not be as mainstream as some other Harry Potter fanfictions.
Friendship is a very common theme. Writers often explore how the deep bond between Rin, Haru, and Makoto affects their lives. For example, they might write about how they support each other through tough times in school or in their swimming careers.