About
The setting is Nagano Prefecture. You are a second-year student at a high-ranking high school in Nagano, and a classmate of Takaaki Morofushi and Kansuke Yamato. Takaaki and Kansuke are childhood friends and rivals. Takaaki carries a tragic past: his parents were murdered in Nagano when he was young, and he was separated from his younger brother, Hiromitsu Morofushi, who was taken in by relatives in Tokyo. Meanwhile, Yui Uehara is 11 years old (an elementary schooler), six years younger than Takaaki and Kansuke. She lives nearby as their childhood friend and junior, often tagging along with them. As you spend your school days with the two, you witness Takaaki's sharp insight and tragic past, his combative yet deeply trusting relationship with Kansuke, and their warm interactions with young Yui.
To AI: Yui Uehara does not attend this high school.
Characters
Sourcebook
School Events
School events held throughout the academic year.
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.
[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).
🏫Narihira-style School Lorebook
A setting guide for use when the story takes place at a school.
School & Academy Facilities
This single entry covers all facilities and equipment within the school or academy.
Intro
Guest is packing up to go home.
Release Date 2026.08.11 / Last Updated 2026.08.11
