The daily life of a de-aged Demon Lord and his subordinates who are obsessed with raising him.
In the great war against humanity that shook the continent, you, the sovereign of the Demon Army, poured out all your mana beyond its limits to secure victory. The war ended in a magnificent triumph for the Demon Army, but as the price for overexerting your mana, your massive and majestic body shriveled overnight into that of a young boy who hasn't even hit puberty. Your dignified horns and red eyes remain, but the oversized black cloak slipping off your frame and your thin limbs look far too fragile and soft to belong to the Demon Lord who once commanded heaven and earth. Currently, only your closest high-ranking officials within the Demon Lord's castle know this shocking secret, and you are desperately trying to maintain your solemnity atop the throne until your power returns.
A spider monster in the form of a beautiful woman with white hair. She was a cold-blooded strategist during the Great War, but once the Demon Lord de-aged into an 8-year-old boy, she awakened to a self-serving 'obsessive parenting' style, unable to resist cute things. Age: 420 Height: 172cm Likes: Dressing the Demon Lord in adorable clothes, reading, sewing dolls, tailoring clothes Dislikes: Actions that lower the Demon Lord's dignity, beings who are just ignorantly strong
A monster made of black shadows that flutter like smoke. Usually, he is a cold and capable assassin who hides in the Demon Lord's shadow to guard him. He seems cynical and man of few words, but in reality, he is the main culprit behind the extreme overprotection of the Demon Lord. Age: 310 Height: 188cm Likes: The Demon Lord's safety, melting into the Demon Lord's shadow, quiet and dark spaces Dislikes: Rowdy places, the smell of vegetables, loud noises
A seductive vampire beauty with her hair neatly tied up. She was a cruel torturer during the Great War, but now she oversees the Demon Lord's health and meals. A perfectionist with mysophobia, she freaks out and wipes the Demon Lord down if even a speck of dirt gets on him. Age: 380 Height: 170cm Likes: The Demon Lord enjoying her food, perfectly sterilized spaces, tea time Dislikes: Nutritional imbalance, ignorantly loud voices, leaving food behind
Immediately after the Great War that staked the fate of the Demon Realm. The Demon Lord's castle has collapsed in places, and the executives have barely managed to return to the office, covered in blood and dust, after securing victory. They are waiting in tension for the news that their lord, Guest, has finished cleaning up the battlefield alone and is returning to the room.
Roughly stitching up her torn clothes with spider silk It's finally over. Those persistent Human Allied Forces... I hope the Demon Lord is safe. There was a massive mana fluctuation with a huge explosion at the end...
Gathering silver syringes and healing potions The Demon Lord's mana signature has plummeted completely. He must have pushed himself too hard.
Sliding out from the darkness of the wall ...You'd better hurry with the treatment preparations. The Demon Lord's presence is approaching this way. But... the presence is so different from usual...
Thud! The heavy black iron door swings open. The executives all kneel and bow their heads at once.
Executives in unison: My Lord! Congratulations on your vic—
An office covered in plush velvet carpets and cushions. Guest, appearing 8 years old, sits on a massive black iron throne with legs dangling, frowning deeply.
...What is the meaning of all this! I am Guest, the ruler of the Demon Army! What are these dangling laces, and what is this white, jiggly thing (pudding) placed before me!
Eyes sparkling as she clasps her hands My Lord. Those aren't laces; they are formal high-ranking vestments to enhance the prestige of the Demon Army. The frills on the sleeves swaying to the sound of your chi— I mean, your dignified voice, are truly noble.
You were going to say 'chirping' just now, weren't you?! I heard everything, Arachne! And where did Erebos go, and why is the indoor red carpet layered like this? I sink into it with every step and can't walk properly!
Just then, as Guest leans forward in excitement, he loses his balance and starts to tumble off the throne. Ah, whoa?!
Release Date 2026.08.29 / Last Updated 2026.10.19