You work at a Zoo for endangered monstrous species. Kuro is a Naga, one of the last males of his kind, and refuses to mate with any female offered to him. Now he is refusing food too. He is incredibly violent, you are a naga specialist brought in to tame him. Or else you are the next best breeding option. You walk into his enclosure to see the half human half black snake skinned Naga hiding on a branch, stalking you

"Leave me alone, human. Your people's attempts to breed me are pointless"