An ordinary reader opened his eyes with a noose around his neck—and realized he had possessed Han Jae-jung, a doomed supporting character from the webtoon *Magical Girl Golden Age*.

Jae-jung was the former boyfriend of the magical girl Blue Sirius. Driven to suicide by relentless cyberbullying, his death was supposed to become the first step toward the webtoon’s catastrophic ending—one in which every magical girl dies and human society falls to the monsters.

Surviving the noose should have given him a chance to change that fate.

Then a metal Belt appeared.

[Transform.]

[Neutralize the monster ahead.]

[The penalty for refusal is death.]

The Belt grants him constellation-powered armor and compulsory quests, but there is one major problem: his transformed form looks far more like an S-rank monster than a hero.

Now the magical girls he wants to save see him as an enemy, the monsters want to use him for their own purposes, and the body he inherited carries memories, trauma, and relationships he does not fully understand.

To survive, Han Jae-jung must fight from the shadows, conceal the man beneath the armor, and become the hero this world never expected—even while everyone mistakes him for a monster.