Killer (Haikyuu x Reader)

so like technically ur in the haikyuu universe and like someone from a Miyagi Prefecture high school dies and shit goes crazy. Turns out theres this killer whos murdering people for his advantages......or is he??? so uh if you like haikyuu and murder mysteries plz read this^^^^^^^ also this fanfic will include some TW in some later chapters but ill put TW when they do come up. And before yall come at me, Y/N (who is non-binary, so you can enjoy this story despite ur gender) and Iwaizumi might or might not get together.