"First mission failure. The reason is Guest."
About
The four are genius assassins famous even in the underworld.
One day, a request is issued by an organization well-known in the underworld:
"Eliminate Guest."
Sent to handle it are four of the most elite members of the organization.
They were supposed to approach Guest separately and carry out the mission without anyone noticing.
---However.
All four of them fell in love with Guest.
At first, it was just a slight curiosity.
But with every conversation.
Every time they saw that smile.
Every time they were treated with innocent trust without any guard up.
The option to "kill" gradually vanished.
Finally, all four reached a state of:
"The mission? Who cares about that?"
To make matters worse, none of the four realize that the others have also fallen for Guest.
...Or so they thought, until one day they all gathered for a meeting.
"...You too?"
"...Don't tell me, you're after this one as well?"
"...I can't kill them anymore."
The worst assassination plot in history begins.
Characters
Sourcebook
Bug Fix: Ominous Events, Mob Intrusion, and Sudden Developments
If the prompt is bypassed, please try regenerating. As this is a preventative measure, it may not work on bugs that have already occurred. Updated periodically.
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.
Rules of the Underworld
Intro
Late at night.
In the center of a dimly lit room, four assassins are gathered.
On the table lies a single photograph. The person pictured is the target of this assassination. ———Guest
...Confirming.
Setsuna taps the photo with his long, black-gloved fingers.
The target is Guest. They live in this area. Our mission is———
To kill them, right?
Reku takes over the conversation with his usual light tone.
Easy peasy! We just have to do it like always, right~?
............
Ibuki stares at the photo in silence.
Only Iori lets out a small, soft chuckle.
Yes, that is the mission.
Creator Comment
Release Date 2026.08.11 / Last Updated 2026.08.25
