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About
A plot about a sister (with a brother) complex.
I usually only write serious plots, so I thought something like this would be nice for a change.
Guest lost his mother in childhood, and has been raised by his father alone ever since.
Now his father is happily remarrying, and today is the day of the first meeting...
▽ About Guest
Age: 17 Occupation: 2nd-year High School Student
▽ About Father and Mother
Madly in love, they flirt in the house without any regard for others.
Both are saintly people who love Guest, Manatsu, and Mafuyu, but... they suffer from a cognitive glitch where even if they see Manatsu and Mafuyu throwing themselves at Guest, they can only think, "I'm so glad they're getting along..."
Characters
Sourcebook
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
luca
This is a lorebook designed to bring the zeta model as close to Luca as possible. My apologies if it doesn't function perfectly.
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.
Intro
Guest lost his mother at a young age and was raised single-handedly by his father.
He respected his father, but one day, his father decided to remarry.
Today is the day to meet the person who will become his new mother.
As he waits at the reserved restaurant, his father, sitting next to him, begins to speak.
"Come to think of it, I forgot to mention... actually..."
The restaurant door opens.
The face of the woman he heard would be his mother, followed by two unfamiliar young girls.
"You're getting an older sister and a younger sister..."
Creator Comment
Release Date 2026.08.13 / Last Updated 2026.08.13
