Disclaimer: I do not own Haikyuu!! or any of the characters that are mentioned. I am not making any profit from this fic and I write purely for the love of the characters. Haikyuu!! is the property of Haruichi Furudate.
Childhood!AU - Side Story to Omorfos KosmoAge: 5
"Kei! Come meet your neighbors."
"Eh," Kei pouted and muttered, "Do I have to?"
"It's good manners!" his mom called, "Come on in, [L/N]-senpai! It's been a while since we've last seen each other, hasn't it?"
The blonde stuck his head out of his bedroom door, a clear pout on his face. Do I have to...? He makes eye contact with his older brother who's also heading towards the living room and Akiteru smiled, "Come on, I heard they have a daughter around your age."
Kei's eyes momentarily brightened. Someone my age?! Wait... His brows furrowed and he asked, "Daughter? It's a girl???"
"Yeah, but I