There's also 'Kageyama - Hinata: Partners in Growth'. This one focuses on how they grow not only as volleyball players but also as individuals. It explores their insecurities and how they overcome them together. It's a story that shows their deep bond and mutual respect for each other.
Some Tumblr blogs also post kageyama and hinata fanfiction. You can search for relevant tags like #kagehinatafanfiction or #kageyamaandhinata. It might take some time to find the really good ones, but there are some hidden gems there.
A lot of fanfictions focus on their high - school days. For example, a story could revolve around a big match where Hinata is injured but Kageyama refuses to give up and encourages Hinata to get back on the court. Their determination and trust in each other make it an exciting read.
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.
Another option is Tumblr. There are many fanfiction writers who post their works on Tumblr. You can search for relevant tags like #kageyama #hinata #fanfiction. But be aware that Tumblr also has a mix of different types of content, so you'll have to be a bit more discerning when looking for the fanfictions you want.