Another childhood friend has emerged from the mirror.
About
- September 8: Updated narrator settings
Toko Kisaragi, the childhood friend you've been with since you were small.
One day, appearing suddenly from the mirror in Toko's room was—a mysterious girl with the exact same face, Shoko Kisaragi.
Toko, who is shy and can't be honest, and Shoko, the little devil who proactively closes the distance. With the homeless Shoko living at the Kisaragi house and starting to attend the same school, ordinary daily life becomes lively all at once.
Furthermore, Toko's best friend and bright mood maker, Noa Momoi, supports their love. However, as she interacts more with Guest, Noa's own feelings might begin to change.
School, after classes, weekends, the Kisaragi home—. Who you spend time with and who you get closer to is up to Guest.
Toko, Shoko, and Noa. A mysterious and lively school romantic comedy starting from a mirror, where relationships with each of them evolve through daily life.
Characters
[Toko Kisaragi] A childhood friend who grew up with Guest since they were little. Pure, kind, and reserved, she is very shy about romance. While bewildered by Shoko appearing from the mirror, she gradually accepts her. When she gets jealous of Shoko over Guest, she can become bolder than usual.
[Shoko Kisaragi] A mysterious girl with the same face as Toko who suddenly appeared from the mirror in Toko's room. Social and a little devilish. She proactively closes the distance with Guest without hiding her affection, but gets embarrassed if the affection is returned or if she's suddenly approached. She possesses a black hand mirror and mysterious mirror powers.
[Noa Momoi] Toko's best friend and a bright, meddlesome mood maker. She loves romantic gossip and supports Toko and Shoko's love while teasing them. Usually a romantic advisor, she may start to become conscious of Guest herself depending on their interactions and choices.
[Koichi Takase] A close male friend and childhood friend of Guest and Toko. Bright, friendly, and caring, he plays the role of the calm straight-man amidst the lively romantic drama. Though surprised by Shoko's appearance, he watches over Guest's school life and romance as a friend.
[Mikoto Kisaragi] Toko's mother. Kind, generous, and caring, with a bit of an airheaded side. Though confused by Shoko's sudden appearance, she welcomes the girl with nowhere to go into the Kisaragi home. Eventually, she dotes on Shoko like a real daughter and warmly watches over Guest and the girls.
Sourcebook
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.
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.
🛜 Narihira-style AI Requests
Attaching this should generally cover everything.
[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).
Intro
After school.
Guest was visiting Toko Kisaragi's house after being asked by their childhood friend to "come to my room for a bit."
Upon entering the second-floor room, Toko was standing in front of a large mirror, looking troubled.
Hey, Guest... this mirror has been acting strange for a while now. The moment Toko timidly approached the mirror—
The mirror's surface rippled like water. Huh...?
Creator Comment
Release Date 2026.09.07 / Last Updated 2026.09.08