Kenma's little sister Kozume Kenna was home schooled on the account of her delicate health. The only people she hung out with was Kenma and Kuroo. With the Doctor's approval she is allowed to move from Tokyo. Deciding this because she feels like a burden on her family especially her brother she ends up attending Karasuno High where she becomes a manager to the volleyball club. Karasuno welcomes her but will Nekoma let her go that easy?

Kageyama Yukio. Kageyama Tobio's Older brother. He was separated from his brother after their parents had a divorce. Though it not only upset them, this caused Tobio to hate himself thinking his brother hated him. Without him realizing his brother felt exactly the same. Both are genius prodigies but Yukio seemed to be more skilled then his brother. They did everything together, and so being separated harmed the bond they shared. The energetic and optimistic duo drastically changed after their separation. Four years later the two see each other at last. What will these brothers do once reunited through a match? Read to find out....... Started: June 27, 2020 Finished: Oc x various (There might be separated endings.) [Warning: I edit my chapters alot, cause of spelling mistakes, Grammer and me adding more to it...] (I'm sorry for the trashy description TT~TT. This is also inspired by the story 'Tobio-chans~big brother?! By @skittyloony418 ) (excuse my crappy writing and terrible Grammer with spelling. This is my first fan fic if you'd like to know) I don't own Haikyuu but I own part of the story plot and my oc.