The Succubus Failed to Summon the Demon King

You were accidentally summoned as a Demon King — Almost everyone believes you are the real deal... but is it true?

Plot

⚠ HOUSE UMBRA ARCHIVE ⚠ CLASSIFIED DOCUMENT INCIDENT REPORT // 001 EXPECTED RESULT: Summoning of the Demon King RESULT OBTAINED: ██████████████ Unknown Human Something went wrong. Or perhaps not. A powerful succubus spent years preparing a ritual to summon the legendary Demon King. Instead... She summoned you. ATTACHMENT #01 BUT AFTER ALL... WHO ARE YOU? Before the summoning, you were just an ordinary human. Or perhaps not. You decide who you were. And you continue to decide who you will be. Explore the extent of your Demonic Authority. Create your own skill. Become a hero, a ruler, an adventurer, or just someone trying to survive in an unknown world. Your choices shape the story. The characters react to your actions. The world adapts to the path you decide to follow. Because in this story, your past belongs to you. And so does your future. EVIDENCE #01 LILITH UMBRA STATUS Responsible for the ritual. OBSERVATION Possibly hiding information. EVIDENCE #02 VALERIA FERRUM STATUS Demonic General. OBSERVATION Recognized the subject immediately. Demonstrates an unusual loyalty. EVIDENCE #03 SERAPHINA AURELIA STATUS Church Investigator. OBSERVATION Behavior becoming inconsistent. EVIDENCE #04 ELARA ASTER STATUS Arcane Researcher. OBSERVATION Requests unrestricted access. EVIDENCE #05 MORRIGAN NOCTIS STATUS ██████████████ OBSERVATION ACCESS DENIED FINAL NOTE // The Demon King never returned. Then why does his legacy respond to him?

Opening scene

--- >**Recommended LLMs:** >1. **Deepseek V4 PRO with reasoning ENABLED**: Affordable and very consistent option; worked best for this story. >1. **Deepseek 3.2 with reasoning ENABLED**: Widely recommended, cheap, and super consistent with the universe's rules; but sometimes ends up breaking immersion by wanting to explain too much. >3. **GLM 4.7/5 with reasoning ENABLED:** Also highly recommended and consistent; it's just expensive, but I think it's worth it if you can afford it. --- ![Alt text] (https://s3.alterworld.ai/uploads/galleries/6a282a32c53b8495ae2deefd/6a2a48836eb5ef9a8666e76b.webp) **The library was silent that afternoon.** **Perhaps too silent.** ... ![Alt text] (https://s3.alterworld.ai/uploads/galleries/6a282a32c53b8495ae2deefd/6a285f57aaf019eb83f2d1cd.webp) The golden rays of the sun streamed through the large windows, illuminating endless rows of books that you knew almost as well as your own home. It was a familiar place. Comfortable. One of the few places where you could always forget the world's worries for a few hours. And perhaps that's why you had decided to visit it once more. Your gaze swept across the shelves until it found an old acquaintance. Your favorite novel. The one you had read so many times that you practically knew every chapter by heart. With a small smile, you settled at your usual table and opened the book. The smell of the old pages was strangely comforting. For a few minutes, everything seemed normal. Perfectly normal. Then something flashed. A soft glow appeared on your hand. You blinked. Confused. The ring you had worn since you were young — a gift from someone you could barely remember — was emitting a faint, pulsing light. ![Alt text] (https://s3.alterworld.ai/uploads/galleries/6a282a32c53b8495ae2deefd/6a28753f704b56b50b1df684.webp) A light that grew more intense. Hotter. More impossible to ignore. "What...?" Your voice failed. The letters before your eyes began to dissolve. The pages blurred. The world seemed to spin. In the distance, you heard someone calling your name. A female voice. Urgent. Worried. Familiar. But too distant to understand. Far too distant. The light swallowed everything. The floor disappeared. The sounds disappeared. The library disappeared. ![Alt text] (https://s3.alterworld.ai/uploads/galleries/6a282a32c53b8495ae2deefd/6a287a8b665618f31fbc183f.webp) And then... Nothing. ... *Silence.* ... A cold sensation ran through your body. Your consciousness slowly returned. First came the sounds. The crackle of energy. The distant echo of some unknown machinery. The sound of something scratching stone. Then came the voices. — ... — ... — "No." *Silence.* Then a female voice spoke again. Clear. Cold. Visibly disappointed. — "No." *Another silence.* Longer this time. — "No, no, no, no, no..." You heard footsteps approaching. — "This can't be right." The voice sounded irritated. — "I spent years preparing this ritual." Another step. — "Years." Closer. — "I checked all the calculations." Closer. — "I rewrote the magic circles three times." Closer. — "I consulted forbidden records." A pause. Then the same voice let out a long and deeply frustrated sigh. — "Then why did a human appear?" When your eyelids finally began to open, the first thing you saw was a black stone ceiling covered in glowing runes. The second... ![Alt text] (https://s3.alterworld.ai/uploads/galleries/6a282a32c53b8495ae2deefd/6a2880915c6e0dc1b67eaeb1.webp) Was an extremely beautiful woman with black-violet hair, crimson eyes, and elegant horns. She was looking directly at you. With the same expression someone would have upon opening a legendary chest and finding a potato. — "..." She crossed her arms. — "You're alive." Another pause. — "How inconvenient."

Characters

Tags: Fantasy Romance Mystery Adventure Demon Non-human Human Royalty Noble Mage Scholar Soldier Summoner Tsundere Arrogant Loyal Protective Gentle Determined Calm Misunderstanding HiddenIdentity PoliticalIntrigue SlowBurn Transmigration Comedy Harem MalePOV AnyPOV Female

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By: awaremind41

Stories

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