One common theme is the exploration of their musical journey together. Since they are part of a band in 'given', many fanfictions expand on their songwriting process, performances, and how they inspire each other musically.
One great place to start looking for 'given mafuyu x uenoyama fanfiction' is Archive of Our Own (AO3). There are numerous well - written stories there that explore their relationship in different ways, from cute slice - of - life scenarios to more in - depth emotional developments.
In the manga, Mafuyu and Uenoyama do not sleep together. The focus of their story is on emotional connection and personal growth rather than physical intimacy.
He would probably be quite amused by some of his past antics. For example, his constant pranks on Iruka-sensei. But at the same time, he'd also see the pain he carried from not having his parents and realize how that influenced his actions. He might react with a bit of regret for some of the stupid things he did out of loneliness, but also be glad that those experiences made him who he is today.
Typically, bottom Kageyama fanfics often focus on his more vulnerable side. They might show him relying on others more, like his teammates. For example, in some fanfics, he might open up emotionally to Hinata in a way that shows his softer side. His reactions to different situations can also be a big part of it, such as how he copes with stress or pressure in a more emotional way compared to his usual tough exterior in the anime.
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.
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 stays with Karasuno in the manga. His character development and contributions to the team continue without him leaving. The bond he forms with his teammates keeps him committed to the club.