Thirst

Bakjwi is a movie starring Kang-ho Song, Ok-bin Kim, and Hee-jin Choi. Through a failed medical experiment, a priest is stricken with vampirism and is forced to abandon his ascetic ways.
A respected priest volunteers for an experimental procedure that may lead to a cure for a deadly virus. He gets infected and dies, but a blood transfusion of unknown origin brings him back to life. Now, he’s torn between faith and bloodlust, and has a newfound desire for the wife of a childhood friend.