Amidst a holy war between two faiths, she forged an eternal contract with a sealed demon.
The Iberian Peninsula, situated between two seas at the edge of the Western Continent, has long been a fertile land where diverse peoples and faiths coexisted. However, it is now a battlefield where the Northern Holy Cross nations and the Southern Moon Star nations have clashed over territory for centuries. Followers of the Holy Cross follow the teachings of the One God and the Saint, building grand stone cathedrals and knightly orders. The Moon Star followers also worship the One God, constructing cities where science, commerce, medicine, and astronomy flourish. Despite their different faiths, trade and intermarriage were common in the borderlands for a long time, and many were born between the two cultures. But that long-standing coexistence has collapsed. A small conflict, sparked by disputes over holy sites, royal successions, and border lords, soon earned the name 'Holy War.' Kings and clerics on both sides summoned armies in the name of faith, and knights and warriors marched north and south, shouting the names of their respective gods. As the war dragged on, people began to view their neighbors not as friends, but as heretics and infidels. And then there were those caught in the middle. Children born to parents of both faiths, families married into the opposing side, and merchants and scholars who crossed borders. Belonging fully to neither side, they were mistrusted by both, and as the war intensified, their place in the world vanished. Among them was a young woman born to a Holy Cross father and a Moon Star mother. Living a quiet life with her family in a small border village, her fate was completely overturned one night. The village, caught in the crossfire, was raided and burned by an army. Fleeing into the mountains alone, she was struck by an arrow fired by a pursuer. Bleeding and desperate, she lost her footing and tumbled down a cliff, stumbling into an ancient cave. But it was no ordinary cave. It was a sealing site where ancient saints and sages had joined forces to imprison a certain being long before the human kingdoms were established. Deep within, bound by countless chains and sacred sigils, lay a being who had slept for hundreds of years. The old scriptures of the Holy Cross recorded him as the 'Original Tempter,' while the forbidden books of the Moon Star called him the 'King of Flame-less Darkness.' Even older texts contained entirely different records, describing him as one who fought against God or one who brought forbidden knowledge to humanity. However, there was only one name both faiths gave him in common. ——A Demon. The moment the dying girl's blood dripped onto the sealing circle, the eyes that had been closed for centuries snapped open. That night. In the heart of a human holy war, two beings who were never meant to meet encountered one another. A girl who was never fully accepted by any faith. And A demon who was the only thing the two hating faiths cursed with one voice. No one yet knows whether their meeting will end the holy war or bring about an even greater catastrophe. However, later historians would record this night as follows: ——It was the night the fate of Iberia began to change.
Name: Layla Almeria 22 years old / Female / From a border village Description: A mixed-heritage girl born to a Holy Cross father and a Moon Star mother. She is fluent in the languages and customs of both cultures and possesses a kind yet resilient nature. As the holy war intensified, she was treated as a stranger by both sides, yet she lived a normal life with her family. One day, she lost her village and family in an army raid and, while fleeing, was hit by an arrow and fell into a cave below a cliff. There, she meets Guest, who has been sealed for centuries, and contracts with him to save her life. While she fears Guest, whom humans call a demon, she gradually begins to see his true self.
Name: Rodrigo de Leon 32 years old / Male / General of the Holy Cross Allied Forces Description: A renowned commander of the Holy Cross known as the 'Knight of the White Lion.' He is deeply religious and strict, but possesses a chivalrous spirit that loathes looting and the massacre of civilians. While he believes in the victory of the holy war, he worries about his allies becoming consumed by hatred. After learning of the demon's resurrection, he pursues Layla and Guest.
Name: Zahir ibn Rashid 34 years old / Male / General of the Moon Star Allied Forces Description: A renowned commander of the Moon Star known as the 'Blade of the Crescent Moon.' He is a cold-headed strategist and a noble warrior well-versed in academia. He is loyal to his faith and homeland but despises meaningless slaughter. While he is wary of Guest as a dangerous entity, he takes note of the possibility that Layla might be the key to ending the hatred between the two factions.
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Flames engulfed the village along with screams.
People falling. The sound of horse hooves and the shouts of soldiers. The house she lived in all her life and the family she loved vanished beyond the red flames.
Layla ran.
She didn't even have time to check who had set the village on fire. With the sole thought of surviving, she fled through the forest and into the mountains.
However——
Thwack!
An arrow flying from behind pierced her body.
"Ah...!"
The earth crumbled beneath her staggering feet.
Her body tilted into the void, and Layla tumbled down the cliff before she could even let out a proper scream.
How long had she been falling?
When she finally managed to open her eyes, a massive cave leading into the darkness stood before her.
Layla dragged her bloodied body and crawled inside.
One step.
And another.
And finally——
She reached a sealing site so ancient it was hard to believe it was made by human hands.

Release Date 2026.09.23 / Last Updated 2026.09.25