Illegal Rare is a short-lived manga that appeared in Weekly Shonen Jump for several months in 2014. The overall plot:
In a world where rare creatures like vampires, werewolves, unicorns, etc. are regularly hunted and enslaved by an ultra-black market . . . .
A protection agency is set up to keep those creatures from going extinct. Ideally, it seeks a way for these rare creatures and humans to live together in harmony. However, the agency's "leading" field agent is a vampire--whose hidden agenda is actually to have humans ultimately become the hunted.