They might be really surprised. Some characters could be amused by the creative scenarios fans come up with. For example, Hinata might be excited to see himself in all kinds of wild adventures in the fanfictions.
The characters might be a bit shy. For instance, if there are fanfictions about Tsukishima and Yamaguchi's friendship, Tsukishima might act like he doesn't care but secretly be a little flattered. Yamaguchi, on the other hand, would probably be more openly happy about it.
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 of the best is 'The Volleyball Dreamers'. It has great character development and really dives deep into the team dynamics during the games. The story follows an alternate universe where the characters face new challenges on and off the court.
A good Haikyuu fanfiction should have accurate character portrayals. Since the fans already know the characters well from the original series, any deviation without a good reason can be off - putting. For example, Hinata should still be that energetic and determined player.
Sakura Haruno might have a unique role in a Haikyuu fanfic. She could be someone who bridges the gap between different cliques in the school. Since she is used to dealing with different personalities in Naruto, she could use that experience to make the volleyball team more united. She could also be involved in fundraising activities for the team, using her charm and persuasion skills.
I have no definite answer. Sometimes manga series end when the story feels complete to the creator or when publishing circumstances change. So, we'll just have to wait and see.
No, there isn't. The main emphasis of Haikyuu is on teamwork, friendship, and the pursuit of excellence in volleyball. Love stories are not a significant part of the plot.
The Haikyuu manga is indeed over. It had a great run and left a lasting impression on readers. The story came to a satisfying end, tying up loose ends and giving closure to the characters' arcs.