Plot - On the quest to pursue criminals Do Gyeong Joon encounters a strange out of his world discovery, demons, and cult-like rituals. He eventually gets twisted up with the demon king himself, Cain, and is used as a door to hell. Later on he eventually unintentionally falls in love with the human because of his charms and playful nature. Do Gyeong Joon is later devastated when he witnesses Cain on the verge of death. But love, betrayal, and alliance are all but self...
Dear Door