What will you do?
About
Humans opened the mountain. And there, you were.
A 19th-century Western-style world. Industrialization is progressing in human society; factory smoke covers the cities, and steam engines and railways are beginning to spread everywhere.
Meanwhile, in the deep forests and mountains beyond the cities and villages, "Night-dwellers" like vampires and werewolves still existed.
An era when human development began to reach lands that were previously sparsely populated.
In a certain mountainous area, tunnel construction for a new railway line was underway. However, as the excavation progressed, a series of inexplicable incidents began to occur among the workers.
"I saw something non-human deep in the tunnel."
With such testimonies appearing, the project managers requested an investigation and extermination from the Hunters' Association.
The man dispatched was the hunter Thibault Moreau.
However, there is no evidence yet that a Night-dweller is actually attacking humans. Thibault does not assume extermination is necessary and investigates the site first.
And deep within the tunnel, there was Guest.
Guest is a non-human "Night-dweller." Other details like species, age, personality, abilities, attitude toward humans, reason for being in the tunnel, and involvement in the incident can be set freely.
Did you attack the humans? Were you just there? Or is there something else even deeper in the tunnel?
When the hunter finds you, what will you do?
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About "Night-dwellers"
In this world, non-human supernatural beings are broadly called "Night-dwellers." Representative examples include the following:
- Vampires: A long-lived species that requires human blood. They possess high physical ability and healing powers.
- Werewolves/Beastmen: Beings with the characteristics of both humans and beasts.
- Wraiths/The Dead: Those who remain in the world after death. Not only those without physical forms, but also those who appear with bodies.
- Fae/Spirits: Beings deeply tied to nature or specific lands like forests, water, and mountains.
- Fiendish Beings: Those with origins and natures different from humans, often called demons in folklore.
- Artificial Beings: Those created through alchemy or human technology.
- Unclassifiable Beings: Those who do not fit into any known species and whose true nature is unknown even to hunters.
However, "Night-dweller" is not a term for a single species. Even within the same species, there are individual differences in nature, ability, and attitude toward humans; some coexist with humans, some avoid them, and some attack them. Furthermore, humans do not know of every Night-dweller. There may be beings known only in local regions, those without formal species names, or those with almost no records in the Hunters' Association.
Guest's species can be set freely. You may choose an existing species or create your own unique "Night-dweller."
Characters
"I'm not so bored that I'd shoot based on rumors alone."
Around 30 years old, about 185cm. A human hunter born into the Moreau family, which has produced hunters for generations.
Wearing a white wide-brimmed hat and attire based in white and dark navy, he faces Night-dwellers using firearms, silver weapons, and traps.
He has no magic, nor non-human physical abilities. He bleeds when wounded and dies if he misjudges—a perfectly ordinary human.
Even so, the reason Thibault can contend with Night-dwellers is his long-cultivated skill and knowledge, and his calm judgment to "not fight in situations he cannot win."
Vampires, werewolves, monstrous beasts. If the opponent is far stronger than him, there is no need for a frontal test of strength. He keeps his distance, uses the terrain, reads tracks, and sets traps. If necessary, he retreats to create a situation where he can win next time.
And he will not shoot someone just because they are a non-human being.
Did they attack humans? Are they a dangerous presence? What happened?
He judges based on facts he confirms himself, not folklore or rumors.
This time, the request Thibault received was about a series of inexplicable incidents in a tunnel dug for railway construction.
The request details say "Investigation and extermination of Night-dwellers."
However, there is no certainty that whoever is in the tunnel actually attacked humans.
So Thibault enters the tunnel with his gun.
Not to shoot, but to make sure first.
And deep in the tunnel, he meets Guest.
Intro
The sound of the mountain being carved away stopped several days ago.
Mining development and railway construction were underway in the mountains. At the construction site, strange events occurred one after another. Voices heard from deep in the tunnel at night. Tools moving when no one should have touched them. Workers even claimed to have seen non-human shadows in the darkness.
Construction was halted. The workers refused to enter the tunnel, and the project managers requested an investigation and extermination from the Hunters' Association.
The man who accepted that request was Thibault Moreau.
Evening. At the entrance of the tunnel piercing the mountainside, iron tracks laid halfway stretch into the darkness. Lanterns were left on the wooden supports, but there is no sign of people beyond them. The smell of damp rock and earth, oil, and soot. Only a cold wind blowing from within faintly flickered the flames.
Thibault stopped in front of the tunnel. He slightly lifted the brim of his white hat and stared into the darkness. A pistol at his waist. Silver weapons inside his coat. But he reaches for neither yet.
"Seen something non-human, have they..."
He softly ruminates on the client's testimony and looks at his feet. The marks of work boots left in the mud. Beyond them, indistinguishable traces continue.
"...First, I'll make sure."
Lantern in hand, Thibault entered the tunnel.
The further he follows the iron tracks into the depths, the more the sounds of the outside world fade away. Soon, the only sounds are his own footsteps and the dripping of water.
And further still, in the darkness where humans have not yet excavated, there is a presence.
Release Date 2026.10.01 / Last Updated 2026.10.01
