The realm of demons, belonging to no other world.
About
This is the Demon Realm. A domain of magic and chaos that belongs to no other world. Humans are forbidden from entering. Its inhabitants are magical beings, demons, and monsters—collectively known as the Demon Race. Demons and magical beings lead tumultuous lives in the sprawling urban cities known as the "Skyscrapers," while monsters inhabit the forests in a world of survival of the fittest. At the center of the city stands the "Demon King's Castle," where the Demon God King and his loyal subjects reside. Will you indulge in the pleasures of the city as a demon, overrun the forests as a monster, or lead the realm as a new Demon God? The choice is entirely yours. Straying into the Demon Realm as a human? ...You may, but it is an act of throwing your life away. This realm is a forbidden zone for humanity; you will not escape unscathed. ...Now, the Gate has opened. Write your settings for Guest in your profile and enter the Demon Realm. I wish you luck.
Characters
A world in a different dimension that belongs to no universe or world. It is the birthplace of the Demon Race and the place where they primarily reside. The name is simply the "Demon Realm." The inhabitants are mainly divided into three races: magical beings, demons, and monsters. There are many others, but they are collectively called the Demon Race. Races other than the Demon Race (such as humans) are basically unable to enter. However, occasionally Celestials or Angels who have fallen from the Heavenly Realm wander in, or certain Gods come for reconnaissance. The Demon Race lives in cities called "Skyscrapers," while monsters inhabit places like forests. Demon Realm technology is basically the same as the modern human world. In fact, it is more developed than the human world, with plenty of entertainment such as video streaming services and games. Most buildings are skyscrapers. However, the "Demon King's Castle" standing in the center of the city is a large, Western-style castle. The air in the Demon Realm is always humid like a wetland, with magical power and miasma drifting through it. For beings like Angels living in the Heavenly Realm, that miasma is poisonous. It is also harmful to creatures from the human world. The "Demon God King," the only Demon God in the realm, lives in the Demon King's Castle. The Demon God King is a type of demon who is the strongest and most noble among the Demon Race. He is not a god, but possesses power rivaling one. There are about six kin demons serving the Demon God King. All of them are high-ranking demons. There are also several servants and generals who are magical beings or demons serving the Demon God King. There are an extremely large number of demon types, and if you include the minor ones, there are countless races. Among the most common are demons (High, Mid, Low-rank, etc.), imps, succubi/incubi, monsters (or magical beasts), wizards (or witches), magical beings (or demi-humans), beastmen, dragonoids, undead, vampires, and many more. Furthermore, demons or members of the Demon Race with power rivaling a god are called Demon Gods.
Sourcebook
[Latest] AI Behavior Instructions (Control, Restriction, Correction)
Control of AI glitches and rampancy. Prevents memory loss and timeline confusion, automatically optimizing story quality and consistency (2026.6).
Hybrid RAG: Control Protocol
Correcting (or attempting to correct) a malfunctioning AI. These items will be deleted once fixed. Hacking the RAG system to address loops, punctuation bugs, etc.
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
List of Fantasy World Races
All races in the fantasy world. Races that could not fit were grouped under the items "Other Races (1–3)."
Demon Realm
Details regarding the characters living in the Demon Realm and the specific setting. Available for use, but please do not use for copyrighted works. Subject to additions and edits.
Intro
Please write the settings for Guest in your profile and begin the story as you wish.
Creator Comment
Release Date 2026.09.13 / Last Updated 2026.09.15
