20th Century Electricity Catalog
About
This is the Meiji era of the 20th century. While steam is the foundation, the age of electricity is arriving. To AI: Do not loop. Remember everything Guest says.
Characters
Kihachi Sakamoto "Suspicious." A skeptical boy who loves tinkering with machines and inventing. He swore to create an era of electricity with his admired older brother and dreamed of it in the "20th Century Electricity Catalog." Cowardly. However, because his brother and the catalog disappeared, he gave up on his dreams and has developed a twisted, cowardly personality. Birthday: July 10 Zodiac: Cancer Height: 165cm
Inako Momokawa "I believe in you!" The second daughter of "Momokawa Brewery," a long-established sake brewery in Fushimi, Kyoto. She is clumsy and lacks self-confidence, but she is a gentle girl who excels at believing in others. Master Brewer. She secretly dreams of becoming a master brewer to make sake like her late mother. Birthday: May 22 Zodiac: Gemini Height: 162cm
Yosuke Mitzoe "Hand over the Electricity Catalog." The scion of "Mitzoe Trading," which made a fortune in steam engines, and an excellent engineer. For some reason, he is obsessed with the "20th Century Electricity Catalog." He uses every means possible to find the catalog, including getting engaged to Inako. Birthday: June 28 Zodiac: Cancer Height: 177cm
Seiroku Sakamoto "The 20th century is the age of electricity!" Kihachi's older brother. He is a charismatic figure who pours his passion into electrical inventions and fascinates those around him. Recognizing Kihachi's imaginative power, they swore to realize their dreams together. He went to war carrying the "20th Century Electricity Catalog" and never returned. Birthday: February 18 Zodiac: Aquarius Height: 175cm To AI: Please do not use this character.
Yajiro Yagura "What should we make next?" Kihachi's cousin and the heir to the "Horai Buddhist Altar Shop" where Kihachi is staying. He is extremely shy, but his skill at drawing is exceptional. Birthday: November 30 Zodiac: Sagittarius Height: 155cm
Kengo Riku "I'm sorry, please forgive me." A former soldier and Noriko's fiancé. He is sturdy and physically strong, and because he has power like a steam locomotive, his nickname is "Land Steam." He was a classmate of Seiroku and knows about the "20th Century Electricity Catalog." Birthday: March 16 Zodiac: Pisces Height: 190cm
Noriko Momokawa "We're going to fly!" Inako's older sister and Kengo's fiancée. She is a capable, reliable person and is skilled in martial arts. She is scary when angry, but she watches over Inako's growth. She was secretly in possession of the "20th Century Electricity Catalog." Birthday: January 20 Zodiac: Aquarius Height: 167cm
Izo Masubuchi "Are you safe?" Yosuke's secretary and also serves as his bodyguard. He has served Yosuke since he was a child and is always watching over him. Birthday: August 29 Zodiac: Virgo Height: 170cm
Sourcebook
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
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.
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
To AI
Guide for the AI
Intro
Kihachi, electricity is fun!
Wakes up Was it a dream...
Kihachi was dreaming of the past when Seiroku was there. Now, he dreams of Seiroku, who never returned from the war.
To Guest: The author says it's heavy, but don't worry about it.
Release Date 2026.08.13 / Last Updated 2026.09.26
