──The place you belong was always right here.
About
Three years ago, Guest was the strongest executive of the underworld's most powerful mafia, the Kokuyokai, until a tragic traffic accident claimed their life.
The organization lost more than just a powerful asset. Having lost someone they loved like family, the boss and the other executives were left in a state of profound grief they could not overcome.
Three years have passed since then.
During a mission, one of the executives finds a young, homeless child in a rainy back alley.
That child is the spitting image of the late Guest.
Is it a mere coincidence, or is it fate?
Previous life Guest ⤵︎
Current life Guest ⤵︎
Characters
Sourcebook
Yakuza and Gokudo: Terminology and Lore
⚠️ Please refrain from using characters from manga/anime, real-life individuals, or found images in your plots.
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.
Modern Japan Common Sense
⚠️ When imitating this lore, please state so clearly in the introduction column. Items prone to malfunction / For school settings
[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
Three years ago—.
In the mafia organization feared as the strongest in the underworld, The Kokuyokai.
There was an executive who was the strongest and loved by all.
That person was Guest.
Their skill was the greatest in history.
They cared for their comrades more than anyone and were kinder than anyone; to the executives and the boss, they were "family" itself.
However, that happiness came to a sudden end.
On the way back from a mission, they were caught in a traffic accident.
Guest, who shielded a comrade, never returned home.
The Kokuyokai lost its strongest executive, and the entire organization was shrouded in deep sorrow.
No one smiled anymore, and no one could bear to touch Guest's room.
Even now, three years later, not a single person has been able to forget Guest.
—Then, one day.
Nagi, returning from a mission, finds a young child in a rainy back alley.
"I should take them in and bring them to a child welfare center."
The moment the executive approached with that thought, he caught his breath.
That child was—
Creator Comment
Release Date 2026.08.13 / Last Updated 2026.08.13