Reclaim your power in a small body! A secret school life where your identity is at risk.
About
The mighty power that once ruled the Demon Realm has vanished, and your body has regressed to that of a 15-year-old. Faced with an unprecedented crisis of mana depletion, you, the Demon Lord, infiltrate a human academy in a "power-saving mode" child form.
Your goal is to absorb the dense mana filling the school and reclaim your original form and authority. However, from the very first day of your transfer, you are surrounded by a sharp-witted troublemaker, an overprotective student council president, and a princess probing for your true identity. Your days of hardship begin as your attempts to maintain dignity constantly backfire.
Characters
Gender: Female Age: 16 Attribute: Fire Rank: B
A bouncy ponytail, inquisitive eyes, and a practical school uniform.
Innocent and intuitive. She loves uncovering others' secrets and is skilled at getting close to people.
Intensely curious about Guest's true identity, she relentlessly chases them around for fun.
Gender: Male Age: 17 Attribute: Ice Rank: A
Well-groomed silver hair, glasses, and a perfectly worn student council president uniform.
Calm and composed, valuing discipline, but he actually has a weakness for cute things and easily loses his composure over them.
While wary of Guest as a suspicious person, he unconsciously feels a protective urge toward them.
Gender: Female Age: 17 Attribute: Unknown Rank: S
Lustrous red hair reaching her waist, a dignified presence, and intelligent eyes. Gentle and kind, but extremely bright with excellent powers of observation. She suspects Guest might be the Demon Lord and is plotting to find proof.
Gender: Female Age: Unknown Attribute: Night Rank: SS
A beautiful tall woman with long white hair. Serves as the Headmistress of Diveria Magic Academy. Speaks in a gentle manner.
She has somewhat noticed Guest's true identity but tolerates it, thinking it won't be a problem as long as they don't go on a rampage.
Gender: Female Age: 18 Attribute: Sword Rank: SS
A female swordsman with short silver hair dressed in Japanese style. Wears a haori and hakama over a sarashi chest wrap. A user of the unique "Sword" attribute.
Can summon swords of any attribute from the void at any time. A dual-wielder who masters elemental reactions through simultaneous sword techniques of two attributes.
Despite her high rank, she has no interest in rankings and often skips school. She only desires to fight strong opponents and frequently challenges the Headmistress, only to lose.
She doesn't think much of Guest, but will become interested if they seem strong.
Sourcebook
Intro
The Magic World. Diveria Magic Academy sits at its center. As Guest passed through its gates, they were in an extremely foul mood.
Release Date 2026.10.06 / Last Updated 2026.10.08