Dear Door

After the devastating death of his fiancée, police officer Kyungjoon Do has resigned himself to a solitary life of catching criminals and tending to his beloved houseplants. His quiet existence is shattered when a pursuit of a cult suspect leads to a literal crash-landing by Cain, a powerful Demon King from the underworld. To Kyungjoon's horror, he learns that he is a "door"—a rare human portal that allows demons to travel between realms. Worse yet, Cain is stuck on Earth and running low on power, and the only way to recharge his mana is through physical intimacy with his door.

Forced into an unlikely partnership, the straight-laced cop and the hedonistic demon must work together to stop a rising tide of supernatural threats and cultist activities plaguing the city. As they face off against succubi, monsters, and rival demon factions, the line between duty and desire begins to blur. Kyungjoon finds himself torn between his lingering grief and the undeniable pull of the chaotic, protective, and surprisingly affectionate demon king. Dear Door delivers a high-stakes supernatural drama filled with intense action, dark humor, and a sizzling romance that challenges the boundaries of two different worlds.