Limits, we all have them and Izuku Midoriya is no exception. The well-trained homicide detective has limits on how involved he'll get with his cases that is until, corpses are being found left and right with every ounce of their blood drained start turning up in Tokyo. They're just in time for the detective's old partner Katsuki Bakugo to trade him in so he can work with his soon to be husband. So ,Midoriya finds himself working with a mysterious new partner. Shouto Todoroki is cold and distant for the most part but that isn't what bothers Midoriya about his odd personality. Its his obsession with the newest string of copycat murders that take over the city of Tokyo that sends waring signs off in the young detective's mind. So, Midoriya quickly limits himself on how curious he's allowed to be about Todoroki until he finds himself developing feelings for his ever-evasive partner. After all some limits are meant to be broken, aren't they? A Detective and Vampire Tododeku Au! Cover art is not mine all credits go to the orginal artist and the story will not be 100% cannon compliant! Cross posted to my Ao3!All Rights Reserved