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.
Sure, Karasuno beats Shiratorizawa in the manga. The match is full of thrilling moments and showcases the growth and determination of the Karasuno team.
One great 'Haikyuu Yachi Fanfiction' is 'Yachi's Growth'. It shows her journey of becoming more confident in the Karasuno team. Another is 'Yachi and the Volleyball World', which dives into how she experiences the intense volleyball matches from her unique perspective. And 'Yachi's Hidden Talents' is also a good read, exploring some skills of Yachi that we don't get to see much in the original anime.
One common theme is the exploration of their friendship turning into something more. The story often shows how their bond deepens over time until it reaches a point where a kiss is a natural progression. Another theme could be the influence of the volleyball team on their relationship. Maybe they support each other during tough practices and that closeness leads to the kiss.
Yes, there are quite a few. You can start by looking on popular fanfiction websites like Archive of Our Own. There, you'll find a variety of stories exploring different scenarios between Hinata and Yachi. Some might focus on a slow - burn relationship leading up to the kiss, while others could be more of a spur - of - the - moment kind of thing.
One common theme is friendship development. Since they are both characters in the same story, their friendship is often explored in depth, like how they support each other through tough times. Another theme could be the discovery of new feelings. For example, they might start to realize they have more than just friendly feelings for each other.