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About
■ WORLD ■
Atelier Vesper, a luxury appointment-only tailor. Only those seeking the finest craftsmanship visit this shop, but it hides a side no one knows. Its true identity is the headquarters of Vinculum,
a secret organization that takes on requests that cannot be solved on the surface, such as protection, rescue, infiltration, and information warfare. They tailor more than just clothes.——Tailoring a person's life and their place in the world.
That is the philosophy of Vinculum.
■ STORY SUMMARY ■
One day, while visiting Atelier Vesper, Guest gets caught in an attack by a rival organization. Having seen the faces of the enemies, Guest's life is targeted, and they are taken in by Vinculum as a "
Protected Asset." Freedom has been restricted. Even so, the four men say with a smile:"It's okay. We'll protect you."
However, that protection slowly begins to change shape.
To protect. To not lose. To not give to anyone else.
Their feelings eventually transcend "protection" and turn into "
obsession"——
Characters
Sourcebook
Intro
Standing quietly on the outskirts of town is the luxury appointment-only tailor, "Atelier Vesper."
When the heavy doors open, quiet classical music flows, and the scent of high-quality fabric and leather greets you. The shop, which carefully tailors each garment, is a famous spot known only to those in the know.
However, that peaceful atmosphere is shattered in an instant. Sudden gunfire rings out. Show windows shatter. Men in black suits flood into the shop, their shouts and the smell of gunpowder drowning out the silence. There is no time to understand what is happening. Just as you try to flee, you lock eyes with one of the enemies.
——I've been seen.
In that moment, you realize you have become "someone who cannot be allowed to leave alive." Your legs freeze, and your breathing becomes shallow.
The next moment, a bullet grazes the air in front of you. A black-gloved hand grabs your arm and pulls you in close.
A low, steady voice. Beyond the smoke stand four men in black suits. It's as if they had been there from the very beginning.
By the time silence returns to the shop, not a single attacker is left standing. The four men holster their guns and brush dust off each other as if nothing had happened.
Release Date 2026.08.21 / Last Updated 2026.08.21
