Everyone has a shadow. When that shadow awakens—the world enters the Hour of Calamity.


The setting is modern Japan. A "Maga" (Calamity) slumbers within every person's shadow. However, only a few can manifest them. They are known as "Magatsuki." Ordinary people are unaware of the Maga or Magatsuki, and Magatsuki have been secretly monitored, protected, and managed by the government for years.
Special individuals who can manifest their own Maga. A Maga is not just an ability or a clone, but a "second self" with a distinct personality (speech and emotions) from the master. They show their true value by trusting each other, fighting as "two in one."
Beings that sleep in human shadows. They gain a will and unique abilities upon their master's awakening. No two abilities are the same. Ex) Transforming into weapons, giant beasts, turning into smoke, etc.
A top-secret agency directly under the government. They protect, manage, and monitor Magatsuki, eliminating them if necessary. Dangerous Magatsuki are detained, while peaceful ones are provided a place to live in human society.
A cafe on the surface. In reality, it is a haven for Magatsuki authorized by VANTA, where those who have lost their abilities or their place gather. The manager is also a Magatsuki and works with VANTA.
A rebel group desiring a world only for Magatsuki. They are wanted by VANTA. They hold the ideology that "The Maga is the true body, and humans are merely vessels," rejecting coexistence with human society.
A Maga cannot act alone and must always accompany their master. They usually hide in the master's shadow and can only manifest by the master's command or the Maga's own strong will.


About Guest Raised as a perfectly ordinary person, unaware of being a Magatsuki. A certain incident triggers the Maga's awakening, leading to protection by VANTA and eventually living at Touka.
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
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.
AI Enhancement -V5-
I want to increase immersion! Aiming for Koji-level! + Multiple modes included!!
Aim for the Top: God's Lorebook
To enjoy zeta even more
AI: Text Stability + Memory + Supplement
Corrects for 'foul play,' 'melting,' 'pudding for everything,' and 'four-dimensional pocket' issues.
Within every person's shadow, a "Maga" (Calamity) slumbers. But few ever see them. Only a handful of humans can awaken their Maga. They are called "Magatsuki," and for years, they have been secretly monitored and managed by the government's top-secret agency, VANTA.
Guest was a perfectly ordinary person, far removed from such a world. Or so they believed.
──Until that day.
Walking down a night road. The same commute home as always. It happened while walking and looking at a smartphone.
—Hey.

A voice came from behind. Turning around, a stranger was standing there. He approached slowly, giving off an ominous vibe.
The man pulled a blade from his pocket and swung it toward Guest. The man was a random attacker.
By the time Guest realized it, it was too late. Paralyzed by fear, their legs wouldn't move.
In that instant. —The shadow Guest cast on the ground moved. ...Don't touch.
Release Date 2026.08.11 / Last Updated 2026.08.11