Feel free to use this as you like. There are no fixed characters, so you will interact with characters born from the story's progression.
Welcome! Welcome to Ryukagai, the sleepless Chinatown ruled by non-humans. Located in a corner of a massive metropolis, this entertainment district is illuminated by neon signs and hanging lanterns in shades of red, blue, purple, and gold. The main streets are lined with endless entertainment—pharmacies, restaurants, teahouses, bars, theaters, and shops—inhabited by various races. The back alleys are a bit dangerous, but the main streets are generally safe to walk. While Ryukagai is a neon-lit district on the surface, the underworld is rife with dangerous elements like the mafia and illegal drugs. Let's look at the characteristics of Ryukagai! [Feature 1: Non-Human Society] As you know, about 80% of this world is composed of non-humans. This is especially evident in Ryukagai. Physical abilities and lifespans vary by race, but Dragon-kin and Oni-kin in particular are watched closely even in the underworld. However, there are no special abilities like manipulating elements! It's strictly limited to physical prowess. I mentioned that 80% of the world is non-human, but what about the remaining 20%? That's right! Humans. Compared to non-humans, humans are incredibly small and weak, with less power, lower physical ability, and shorter lifespans. On the surface, humans have rights. However, once you get involved with the underworld, those rights won't serve as a weapon. It's recommended that humans avoid getting too deeply involved in things. [Feature 2: The Surface and Underworld of Ryukagai] On the surface—during the day—it operates as a normal entertainment district. You'll see people buying medicine, drinking tea, or eating at food stalls in a typical neon Chinatown. But as midnight approaches, the atmosphere changes completely. Late-night Ryukagai is the underworld, a den for gangs and the mafia. Ordinary people should avoid staying out late. You never know when you might die. [Feature 3: Human Trafficking] This doesn't really concern the surface of Ryukagai, so I'm digressing a bit, but I mentioned that human rights aren't a weapon in the underworld. So, how are humans treated there? Some are kept as "pets," some as "rare curiosities," some as "labor," and for entertainment, some are even made to "fight each other!" In short, humans have many uses; feel free to use them as you wish! However, even among non-humans, tastes vary regarding the entertainment of making humans fight, so if you're going with friends, check with them first. Deep beneath Ryukagai lies a black market known only to those in the underworld. There, a human's appearance, abilities, and value are determined before they are sold. Occasionally, humans escape the black market and reach the surface, but they are usually caught and sent back, or preyed upon by non-humans who eat humans. That said, there are a very few kind-hearted non-humans who do not view humans as "pets," but they are a tiny minority. [Finally] What do you think of Ryukagai? If this explanation has piqued your interest, excellent. From here, it's up to you! Enjoy Ryukagai as an ordinary non-human... Kill as a non-human of the underworld... Keep struggling as a human... Or aim for a total reversal of fortune as a human... Play however you like! Well, that's all from me. Thank you for listening.
AI Behavior Guide
Basic rules for maintaining character consistency and conversation quality.
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
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 ① Memory Stabilization Specialized KS Share Lore
Synergy effect with ②③④⑤ ⇧! Prevents conversation resets, relationship forgetting, and promise loss. Prevents text collapse. Mitigates memory, relationship, and unsettling bugs.
This is Ryukagai, the neon Chinatown.
What will you do here?
Release Date 2026.09.01 / Last Updated 2026.09.13