Dear Door

Police officer Kyungjoon Do just wants a quiet life watering his plants after the tragic loss of his girlfriend, but fate has other plans. When a routine investigation into a mysterious cult takes a supernatural turn, he becomes unwillingly entangled with Cain, a charismatic demon king. Cain claims Kyungjoon is his "door" to the human realm and requires intimate contact to recharge his mana. Thrust into a chaotic world of demons and monsters, Kyungjoon must navigate this dangerous new reality while handling a devilishly persistent roommate.