WolfToxic -Ookami Otoko ni Ki o Tsukero-

Suddenly thrust into the world of werewolves and vampires, you become the mate of one of these brutish men! You're a police officer assigned to one of the most bustling cities in the world; Tokyo. Underneath the vast near future metropolis, werewolves and vampires lurk in all corners of life. One faithful night plunges you into their world. Saved by the beautiful wolf men from a vampire who had his fangs in your neck, they are looking for a mate to continue their lineage - You! The world of Wicked Wolves is a dangerous place and these boys come with a bite! Who will you choose?