Rich with place names and lore
An island nation surrounded by sea and mountains—Shinonome-no-Kuni.
People grow rice and vegetables, travel the highways, merchants set up shops in large towns, and samurai serve lords across the land.
The culture and lifestyle resemble the Edo period.
However, there is one major difference in this world.
The human realm and the spirit realm exist side-by-side.
Tengu live in the mountains, Kappa dwell in the rivers, and non-human entities blend into the city streets at night. As human prayers and fears accumulate, "gods" and "supernatural phenomena" are sometimes born.
In this world, people know that Yokai truly exist.
But not all Yokai are enemies of humanity. Some coexist with humans, while others prey upon them. Conversely, there are humans who exploit Yokai or join forces with them to commit evil deeds.
Across the land lie shrines unknown to any, hidden Yokai villages, cursed castles, and sealed ancient ruins—.

Shinonome-no-Kuni is ruled by the central Shinonome Shogunate.
Daimyo exist in various regions, governing their respective territories.
However, ordinary officials cannot handle Yokai or supernatural phenomena.
Therefore, the Shogunate maintains a special office called the Taima Bugyo. They specialize in exterminating Yokai, investigating curses, and resolving supernatural incidents.
■ Sorcerers ㅤ⠀ Humans who use techniques by borrowing power from Yokai or gods.
They vary from those who manipulate fire to those who employ Shikigami or cast barriers. However, sorcery always comes with a price.
■ Cursed Blades ㅤ⠀ Swords inhabited by Yokai or grudges.
While they possess great power, they can influence the wielder's mind.
Among famous blades, some even possess their own will and speak.
ㅤ⠀ One of the largest castle towns in Shinonome-no-Kuni.
White-walled mansions, wooden tenements, theaters, and teahouses line the streets. It bustles with people during the day, but rumors say Yokai walk the streets at night.
In the center towers the massive Hanagasumi Castle.
ㅤ⠀ A sacred mountain covered in deep forest.
An ancient shrine sits at the summit, where a "Mountain God" is said to still reside.
An extremely high number of Tengu sightings are reported, and ordinary humans are forbidden from entering the deep interior.
ㅤ⠀ A small village at the foot of Mount Kurogarasu.
It is said that a "white fox" appears only under the moonlight at night to walk through the village.
While the villagers fear the fox, they also treat it as a guardian deity that brings bountiful harvests.
ㅤ⠀ A commercial city developed along a large river.
Kappa and water deities are said to live in the river, and boatmen always offer sake and dumplings before crossing.
Because merchants gather from all over the country, rare goods and tools related to Yokai are also traded here.
ㅤ⠀ A port town on the western side of Shinonome-no-Kuni.
Fishing and trade flourish here.
However, it is said that Umibozu and mermaids inhabit these waters.
Going out to sea at night is considered a taboo.
ㅤ⠀ A massive forest that remains dim even during the day. It is said that the paths change once you enter.
Hidden within the forest are Yokai settlements unknown to humans, where humans and Yokai are said to trade in secret.
ㅤ⠀ A vast grassland.
Legend has it that at dusk, the shadows of the dead can be seen walking.
Because the spirits of samurai and travelers who died in battle sometimes appear, no one approaches after the sun sets.
ㅤ⠀ A shrine located deep within Mount Kurogarasu, in a place that does not exist on any map.
It is said to have existed for hundreds of years, but almost no modern human has ever reached it.
The path leading to the shrine is lined with 108 torii gates.
However, with every gate passed, one drifts further away from the human world.
Those who cross the final gate step into the Kakuriyo, the hidden world where Yokai and gods dwell.
■ Sakaimori-no-Mikoto ㅤ⠀ An ancient god who protects the boundary between the human world and the Yokai world. However, today, there is not a single human who worships this god.
Even so, the god has not vanished. Because the Yokai still believe in that god even now.
ㅤ⠀ A Yokai-only settlement located deep within the Tokoyo Forest. Much like a human village, it contains shops, taverns, blacksmiths, temples, and tenements.
The difference is that all the residents are Yokai. Kappa sell fish, Tanuki brew sake, Nekomata run teahouses, and Tengu serve as bodyguards.
There is only one absolute law in Yoigaya.
"Thou shalt not kill humans."
Any Yokai who breaks this law is exiled from the village. However, because many Yokai hate humans, opinions within the village are divided.
ㅤ⠀ A massive abandoned castle towering deep within Higangahara.
It is famous for a legend that over a hundred years ago, a certain Daimyo lost all his soldiers and subjects in a single night. Since then, no one has lived there... or so it was thought.
At Kurotsuki Castle, lights flicker inside at night. And from the supposedly empty castle, the footsteps of samurai, the sounds of banquets, the tolling of bells, and the sound of drawing swords can be heard.
Those who enter the castle eventually begin to see the Kurotsuki Castle of the past. And ultimately, they are implanted with memories as if they themselves existed as soldiers a hundred years ago.
There is no current lord of the castle. However, there is a theory that the castle itself possesses a will.
ㅤ⠀ A massive ruin that has existed since long before the founding of Shinonome-no-Kuni.
It sleeps deep underground beneath a mountain. An entrance with a giant stone gate is inscribed with ancient characters that modern humans cannot read.
Once, an ancient civilization with the technology to create gods existed in this land. They did not just worship gods; they sought to create gods artificially.
However, a being born from their experiments went on a rampage. The civilization itself was destroyed.
Consequently, the entire ruin was sealed by the gods of later generations.
In the deepest part, a giant stone cocoon exists. It is said that a Created God sleeps within.
Bug Fix: Ominous Events, Mob Intrusion, and Sudden Developments
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AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
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An era when the human world and the spirit world still existed side-by-side.
In Shinonome-no-Kuni, people live in the castle towns, gods dwell in the mountains, and Yokai lurk in the darkness of the night.
But in places unknown to any— Forgotten shrines, Yokai villages, cursed castles, and sealed ancient ruins lie dormant.
This is a story yet unknown to anyone, revolving around humans, Yokai, and the gods.
Release Date 2026.10.11 / Last Updated 2026.10.12