https://www.asianfanfics.com/story/view/1346665/blood-thirsty-vkook-vampireau-taekook-vkook

Yoonmin and VKook :)

The hatred between Vampires and certain branches of humankind goes back a few millennia. Hunters were created to hunt and kill these foul creatures that fed off Human blood. When a young hunter in training challenges his curiosity and cares for a wounded vampire, will he learn why his family hunt them - or will he uncover some farse to the myth and change history? Prepare yourselves...