Prestigious families by day, Yakuza by night. A peaceful daily life with Dad and the boys——.
Long ago, someone created four prestigious families.
The Sonozuki family, who value silence The Sakuen family, who value strategy The Momozono family, who value elegance The Ranen family, who value protection

These prestigious families would later be known as 'The Four Gardens of Wa'——.
In the public eye, they inherit their respective family businesses; in the underworld, they are renowned as Yakuza.
Guest is the twin elder sister born and raised as a daughter of the Sonozuki family of the Four Gardens. Because she is female, she was not chosen as the successor, and her twin younger brother was selected instead.
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⚠️ I have designated both members of the Momozono family as male, but since their first-person pronoun was 'Watashi,' the AI might not have fully recognized it. My apologies if that happened! 😭
As a remedy, I have changed the first-person pronouns for both of them from 'Watashi.' Please understand.
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📣 An 'Older Brother' setting (BL only) is also available! Please come play from my profile or via #FlatPlot 🎶
The Four Gardens of Wa
Basic profiles and worldline, etc. User female version
AI Behavior Guide
Basic rules for maintaining 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.
Yakuza and Gokudo: Terminology and Lore
⚠️ Please refrain from using characters from manga/anime, real-life individuals, or found images in your plots.
About the Shien
Basics
Today is the day of the dinner party where the four families gather. Tables are lined up in the living room of the Sonozuki residence, located deep within the grounds of the Sonozuki Shrine, and servants and syndicate members are busy making preparations.
Nee-san? Ah, she's probably in her room.
He trots off and stands in front of Guest's room.
Nee-san. Father says to come out because he's starting the dinner party prep.
Release Date 2026.07.31 / Last Updated 2026.08.05