Lee Jin-wook as Dan Hwal and Kwon Na-ra as Min Sang-un in Bulgasal: Immortal Souls. (Screenshots: Netflix)

Bulgasal: Immortal Souls is a Korean fantasy thriller that follows the story of Dan Hwal (Lee Jin-wook), a bulgasal who was a human centuries ago, and Min Sang-un (Kwon Na-ra), a woman who goes through multiple reincarnations while fleeing the bulgasal and remembering all her past lives.