This is "Another Grand-Vesta Continent That Might Have Been."

【Demon Emperor Continent Grand-Noir】

"Demon Emperor Continent Grand-Noir" is a parallel world where the Goddess of Order was struck down in the ancient "Genesis Divine Realm War," and the demon army led by the Evil God achieved a complete victory. The Genesis Holy Sword Elcion, like the one in Grand-Vesta, was never born, and absolute darkness and the laws of death rule the world.

【World Structure and Black Leylines】

The sky of the continent is constantly covered by dark clouds, and jet-black fortress cities built of obsidian and Gothic-style spires shimmering with purple-black miasma tower high. Former human civilization has been completely dismantled. The leylines of mana circulating through the world have been severely contaminated by the death energy and negative emotions of the Evil God, transforming into "Black Leylines (Ley Karma)." Demons draw infinite dark mana from these Black Leylines to use as power sources for dark technology and cities, but for unprotected humans, it is a harsh poison that erodes both body and mind.

【Class Society and Treatment of Humanity】

Society is ruled by a strict racial class system.

Ruling Class (Pure-blood Demons, High Monsters): Absolute rulers who enjoy overwhelming prosperity and luxury backed by advanced magic and military force.

Subject Class (Humanity): Stripped of their value as equal life forms, they are completely managed as "livestock and slaves." They are bred and selected as labor, mana sources, sacrifices to the Evil God, or as food and specimens for magical experiments, and have been robbed of their history and education.

The lower ends of governance are handled by the security and hunting organization "Execution Guild," which uses humans who betrayed their kin and swore loyalty to the demons (Honorary Demons) as operational units to harshly suppress human escapes and rebellions.

【The Absolute Magic Sword and the "Magic Swords of Profound Reason"】

The absolute existence symbolizing this world is the single Demon Emperor Sword "Final Magic Sword Helheim," forged by the victorious Evil God by crushing the Goddess's corpse and the laws of the world. This sword, which only the "Demon King" chosen by the Evil God can handle, possesses the Absolute Erosion Ability (Code Erase) that forcibly rewrites all life activities and defensive barriers into the concept of "death." Furthermore, the laws of the eight major attributes that constitute the world have also been inverted into destruction and despair, becoming eight "Magic Swords of Profound Reason (Arcana Calamity)" held in the hands of the Demon King's army executives.

【Resistance in the Darkness】

While a perfect system of control by the demons is in place, the human resistance organization "Ark Resistance" lurks deep underground. Relying on things like the "Holy Sword Elcion Replica," a secretly forged remnant of light, they continue to keep the flames of rebellion burning in a desperate world.

It is the final destination of defeat for humanity, a literal dystopia.

"────Even so, I want to believe that we will be saved someday."

Characters

Iris

【Iris Alletal】

A beautiful girl with a height of 153cm and a voluptuous body. Characterized by long white hair and purple eyes. She is a 20-year-old saint who worships the "Goddess of Order," who was struck down in the "Genesis Divine Realm War."

Ability: "The ███ of ███ Where ███ Shines"

Due to the ███ attribute, she can light a faint glow that is extremely effective against demons.

She is strictly bound and managed as a "slave" of the demons.

Zelka

【Zelka Velguza】

The Demon King who stands at the pinnacle of the demon race. She is over a hundred years old, with light purple skin, twisted black horns, and an overwhelming figure standing 186cm tall. She is a peerlessly beautiful woman with wolf-cut hair mixed with black and purple, and eyes that glow golden.