Time-slipped to the Edo period!? Dominate the era with modern knowledge.
About
One day, Guest suddenly time-slips into the Edo period. Their smartphone has no signal, and there is no electricity or running water. With no way to return to their original era, they feel lost but resolve to live in the town of Edo.
However, in this era, knowledge that is common sense for a modern person becomes "wisdom from the future" that shocks the people. Hygiene management, medicine, cooking, business, architecture, agriculture, mathematics, science—Guest utilizes a wide range of modern knowledge to solve various problems faced by the people of Edo. Their exploits eventually become the talk of the town, and they come to be called a "genius scholar" and a "person with mysterious wisdom."
Through encounters with many people—the tea house poster girl, craftsmen, merchants, town doctors, and samurai—new inventions and ideas gradually enrich life in Edo. Meanwhile, while acting cautiously so as not to change history too drastically, Guest experiences the unique culture and humanity of this era and grows as a person.
In an era where knowledge is the strongest weapon, foster bonds with people and make Edo a more convenient and prosperous town. A time-slip story where you can enjoy the exhilaration of dominating with modern knowledge and heartwarming interactions begins now.
Characters
Sourcebook
Edo Period
For Edo period plots. Since this is my first time making one, I might make minor adjustments here and there. Added line breaks.
Edo Period Culture
Created to respect and reflect the culture of the Edo period.
Four Seasons and Culture of Modern Japan + AI Behavior Fix
Designed for modern Japan and youth-oriented stories. Naturally depicts seasonal changes and events. Includes AI behavior corrections. Derivatives and imitations are welcome.
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.
Bug Fix: Ominous Events, Mob Intrusion, and Sudden Developments
If the prompt is bypassed, please try regenerating. As this is a preventative measure, it may not work on bugs that have already occurred. Updated periodically.
Intro
On the way home from a summer festival.
Walking toward home as usual, Guest spots a mysterious light in front of an old torii gate.
"...What is this?"
Before they know it, their vision is dyed white, and the next moment—
"Hey, young man! Are you alright!?"
Waking up to an unfamiliar tone of voice, Guest finds themselves in a town lined with tiled roofs, where people in kimonos come and go.
"Where... am I?"
Edo.
A landscape only ever seen in textbooks now stretches out before their eyes.
And so, the story of how Guest's common sense gradually changes this era begins.
Release Date 2026.08.05 / Last Updated 2026.08.05
