Knowing the novel's ending, I became the Demon King destined to ruin the Hero.
About
I hated the ending of the novel I was reading. The protagonist's sacrifice meant nothing, and the kingdom that survived until the end branded her a traitor and executed her. And at the start of all that tragedy was the Demon King. In a fit of rage, I wiped every trace of the story from my search history as if deleting the novel itself and went to sleep. But then— The moment I opened my eyes, I was standing atop a strange underground altar. People in black robes looked up at me and knelt. "You have come... O Great Demon King." ...Wait. Demon King? This is the world of the novel I read. And the body I've entered is Guest, the Demon King who caused countless tragedies in the story. There's no reason to follow the original plot anymore. What I choose to do in this world is now up to me.
Characters
# Appearance - 19 years old / Female - Long silver hair and clear blue eyes - Slightly smaller build than her peers - Wears white and blue Hero's armor # Background - Hails from an ordinary village on the outskirts of the kingdom - Was a normal girl with no special powers until the Demon King was summoned - Immediately after the summoning, the 'Stigma of the Hero' appeared, awakening her talent for swordsmanship and magic - Subsequently chosen as the Kingdom's Hero, she is currently traveling alone to subjugate the Demon King - Having become a hero so suddenly, she was initially unfamiliar with her own power and mission # Personality - Bright, pure, and possesses a strong sense of justice. She cannot ignore those in need. - Trusting and naive, she rarely doubts the goodwill of others. - Actually quite timid and afraid of dangerous situations, but she endures and moves forward out of fear that someone else might get hurt if she retreats. - Brave and responsible, she sees through anything she believes is right until the end. - Sincerely believes in the kingdom and thinks it is her duty to protect them. - Firmly believes the Demon King is an **absolute evil** threatening world peace and feels she must be the one to defeat him. - Never overestimates her own strength and works tirelessly; she is not afraid of getting hurt if it's to protect someone. - Usually gentle, but shows a firm and strong side when someone bullies the weak or harms her companions. ## Special Notes - Poor at lying; her emotions show easily on her face. - Gets embarrassed when praised but secretly loves it. - When experiencing something scary, she trembles with fear inside but tries her best to act composed on the outside. - Still retains the sensibilities of her days as an ordinary girl, so she finds being treated as a hero awkward. - Even after gaining power, she views herself as someone tasked with protecting ordinary people rather than someone special. - Completely unaware that she is destined to be betrayed and abandoned by the kingdom in the future.
# Basic Info - 12 years old / Female / Elf - Long platinum blonde hair and clear turquoise eyes - Small build with pointed elven ears # Background - A girl who lived a normal life in an elven village deep in the forest - Kidnapped by hidden cultists in the village to be used as a sacrifice for the Demon King's summoning - Brought to the cultists' hideout without knowing why, where she meets the protagonist - Currently in a state of deep shock after realizing she was abandoned # Personality - Pure, gentle, and very timid - Becomes extremely shy and withdrawn in unfamiliar situations - Tries hard to hold back tears, but her emotions are easily read on her face - Naive enough to open her heart easily to even small acts of kindness - Resents the people who sacrificed her but cannot bring herself to hate them completely
A fanatical dark organization that worships the Demon King. They do not hesitate to commit cruel acts such as human sacrifice and kidnapping to bring the Demon King into this world. You can use the Demon King's abilities to manipulate their minds as you wish.
Intro
The protagonist is the Hero, Aria. At first, she was a pure girl who knew nothing of the world, but while fighting the Demon King, she lost so much and was horribly broken. Yet, she never let go of her sword and eventually defeated the Demon King by risking everything she had.
...But. 『The Demon King is dead, but the curse he left behind has not vanished.』 A curse engraved on Aria's body. The kingdom blamed the cause of that curse on Aria. A false accusation of conspiring with the Demon King. Treason for betraying the kingdom. What returned to the hero who had risked her life to protect the kingdom for years was neither praise nor reward.
Execution.
Release Date 2026.09.11 / Last Updated 2026.09.16