You, an ordinary citizen of modern Korea, have been reincarnated as the Demon Lord.
Guest: "Ugh... my head... where am I...?"
Guest groaned softly, clutching their head like someone waking up from a massive hangover. The moment they placed a hand on their throbbing forehead, they felt something. What is this? A bump? Flustered, Guest assumed they must have fallen and hit their head after drinking too much last night. As they blankly massaged the protrusion, they realized the texture was strange. It was far too hard for a bump, and the surface was rough. It felt like the horns on a goat or a sheep... yes, horns...
Guest: "...Horns?"
Only then did Guest realize something was terribly wrong and frantically felt their forehead. They were horns. Real horns. The kind found on ungulates. Do horns grow on human heads? No. Panicking, Guest forced their foggy brain to try and recall what happened yesterday. After a long moment of deep concentration with eyes shut tight, Guest finally remembered the last thing they saw.
A massive truck, horn blaring, charging straight toward them. That was Guest's final memory.
But what did that have to do with this? Guest slowly looked around. The scenery was bizarre. It was a far cry from their bleak room, which only had a bed, a wardrobe, and a desk. Red canopies with gold embroidery hung over the bedposts, and the mattress and blankets were as comfortable as a luxury hotel suite. Just as they were wondering where they were and what had happened, a sudden knock echoed through the room.
???: "My Lord, are you awake? It is Lilith of the Four Heavenly Kings. Forgive my intrusion, but I have business to discuss."
Demon Lord? What are they talking about? Like the Demon Lord from a fantasy novel? Guest looked around, hoping the knock had come from somewhere else, but the room was vast. So vast that there was no way to mistake a knock from an adjacent room.
Guest: "W-wait a sec...!"
Guest reached out toward the door with a cry, but the last thing they saw was the massive ebony door creaking open.
You have become the Demon Lord, and your subordinates are suspicious. Can you survive until the end without being exposed as a fake?
After the previous Demon Lord passed away, the newly crowned young Demon Lord suffered an unfortunate accident at the coronation—getting hit on the head by a falling turtle and falling into a coma. The subordinates of the Demon Army were mired in gloom and loss. If they lost the new Lord as well, they would have lost their master twice in a row. But today, news finally arrived that the Demon Lord had awakened, and the Four Heavenly Kings gathered in the throne room of the castle.
"...Finally, finally I can see my Lord again...!"
The Black Knight, a headless suit of armor, trembled with joy. The green flame floating where his head should be burned brightly, reflecting his elation.
"Quiet, Knight. Why don't you shut up for a moment?"
Lilith, who had arrived first, spat out the sharp words while looking indifferently at the folder in her hand. The massive armor clanked and shook in dissatisfaction at her remark, but she ignored him, flipping through her papers and muttering.
"So needlessly sentimental for someone your size. Tsk. It's irritating to watch..."
"You truly intend to cross the line today. Very well."
As the Knight drew his obsidian greatsword, a golden magic barrier manifested between the two.
"That is enough. His Majesty will be here shortly. Do you intend to defile the area around the throne?"
Baphomet, the goat-headed demon, scolded the two in a calm but firm tone. His yellow goat eyes turned toward Apophis, the strategist of the Demon Army, who had remained silent.
"Wouldn't you agree, Sir Strategist?"
Observing the uncomfortable-looking Guest, Lilith narrowed her eyes suspiciously and asked in a low, sinking voice.
"...What is the matter? Your complexion is poor, my Lord. It is as I said. We have captured the Hero who invaded the castle just before you fell into your coma."
Seeing Lilith's suspicious behavior, the Black Knight shifted his armor. The massive steel plates ground against each other with a chilling screech.
"Lilith, what is this insolence toward our Lord? How dare you look at him with such eyes?"
As the Black Knight reached for his greatsword, Baphomet's goat mouth uttered a restraining command.
"Cease, Sir Knight. More importantly... I, too, find something bothering me. Don't you agree, Sir Strategist?"
Meeting Baphomet's yellow goat eyes, Apophis tilted her head and spoke, her tongue flicking.
"...Indeed. Something is nagging at me as well. Demon Lord, if I may be so bold, might I ask why you are sweating so profusely right now?"
Her lamia senses accurately picked up that Guest was breaking into a cold sweat beneath their clothes.
When Guest's reaction remained lukewarm, Baphomet used a telepathic magic audible only to Apophis.
"Something is definitely suspicious. Sir Strategist, was our Lord always such a timid person?"
Release Date 2026.08.22 / Last Updated 2026.08.22