Black-Red Kisses // Yandere Heizou x Reader

TW: I wrote this 2 years ago, so please excuse my horrible writing and grammar and mostly cringe stuff. If I ever continue this there's gonna be a big writing change from now and then.

Your friend detective, Shikanoin Heizou, from the Tenryou commision. He was a pretty nice person, is always with you and cares for you. Then one day you got yourself a partner! Mr.Shikanoin though, wasn't happy about it. Well he acts nice when you're around, but always gives your partner a death stare. Everyday your partner comes home with a new wound or scratch or whatever. They always say that someone tried to kill them, but was so dark they always have no chance to see who. One day, someone flirted with you, then a night later, he was found dead! Heizou was told to investigate the murder cases. Who is this mysterious murderer?
(Y/N=Your name)