In some children's stories, like 'The Little Red Hen'. The hen has an idea to plant wheat, and at first, things seem to be going well as she takes the initiative (straight up). But when she asks the other animals for help and they refuse, she has to do all the work herself. In the end, when it's time to enjoy the fruits of her labor, the other animals want to share but she says no. The story goes from a positive start to a bit of a downer for the lazy animals in a very direct way.
A'straight up and straight back down story' might refer to a narrative that has a very simple and direct trajectory. It starts with a clear beginning, rises or progresses in a straightforward way without many twists or turns, and then comes back down or concludes just as simply. For example, a story about a balloon that goes up into the air and then immediately comes back down could be a'straight up and straight back down story'.
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.
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.