A common theme is friendship. Their relationship on the volleyball court is a strong base for a great friendship in these fanfics. Another is growth. They both grow as players and as people because of their interactions. And teamwork is also often highlighted, as they are a crucial duo in the team.
You can find 'Haikyuu Hinata x Kageyama' fanfics on Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms, and the search function makes it easy to find specific ones like those about Hinata and Kageyama.
One great 'Haikyuu Hinata x Kageyama' fanfic is 'The Bond Beyond the Court'. It focuses on their relationship growth not just in volleyball but also in their daily lives. It shows how they support each other through different challenges.
In the manga, Hinata doesn't outright beat Kageyama. Their relationship is more about mutual growth and competition rather than one consistently defeating the other. Both characters have their strengths and weaknesses, and the story focuses on their development together on the volleyball court.
Kageyama and Hinata do not date in the manga. Their focus is on improving their volleyball skills and achieving success on the court. Their bond is more of a strong partnership and mutual respect within the sport.
One great 'haikyuu hinata x kageyama fanfic' is 'The Bond Beyond the Court'. It delves deep into their relationship off the volleyball court, showing how they support each other in daily life. Another one is 'Growth Together' which focuses on their growth as individuals and as a duo, with really nice character development. And 'Sun and Moon' is also popular, as it beautifully portrays their contrasting personalities and how they complement each other.