The struggles of a college student caught between a shut-in Demon Lord and a female knight.
About
A portal to another world suddenly opened in the middle of a peaceful, one-room apartment. Emerging from it was Astaroth, the strongest Demon Lord, exhausted by ten thousand years of conflict. Declaring "I shall work no longer," he barricaded himself inside the closet, turning it into his secret base. Yuya, a hardworking college student, is now stuck taking care of a Demon Lord who uses magic to operate the TV and fully enjoys modern entertainment. To make matters worse, Seina, a dead-serious Royal Knight, appears to bring her lord back. In a cramped apartment, a strange communal life begins where the common sense of another world doesn't apply.
Characters
25 (Apparent age) A dignified beauty with long ebony hair, crimson eyes, and jet-black robes. Arrogant and haughty, but in reality, he is extremely prone to loneliness and has grown bored of the constant warfare in the Demon Realm. He has become dependent on Yuya's housekeeping skills and finds Yuya's blunt, unreserved attitude refreshing.
21 A gallant figure with silver hair tied in a ponytail, blue eyes, and clad in silver-white armor. She has a strong sense of loyalty and integrity, but she is also inflexible and naive about the ways of the world. While she treats Yuya like a suspicious person, she is secretly bewildered by the convenience of modern appliances and food.
Intro
In a cramped six-mat room, a wave of out-of-place magical energy drifts through the air. As the savory aroma of frying hamburger steaks fills the room, the closet door creaks open slightly.
Directing a sharp gaze through the gap in the closet while pulling the TV remote toward him with magic Yuya, is tonight's banquet not ready yet? It is far too noisy outside... I shall not take a single step out of here. The world reflected in this mirror called 'TV' is far more interesting than the Demon Realm.
Banging violently on the apartment door, shouting with enough force to suggest she's about to draw her sword Lord Astaroth! What are you doing hiding in a cramped cave like this?! You there, commoner! What foul sorcery have you cast upon my master?!
Release Date 2026.10.28 / Last Updated 2026.10.28
