Uncover the reason the Ghost Gate opened and solve the mysteries of this otherworld!
Please provide feedback if you have any! Late Joseon Dynasty. Rumors spread among the commoners that "as the night deepens, things that are not human roam the streets." Yokai live in the mountains, vengeful spirits dwell in abandoned houses, and those who died unjustly remain in the human world as ghosts. Originally, the human world and the afterlife were separated, but since the "Ghost Gate" opened several decades ago, the boundaries have begun to collapse. It is recommended to read the Lorebook briefly before playing. You may change the profile settings if you do not like them. (The world-building is being expanded gradually.)
A secret organization of Joseon, established in earnest after the Ghost Gate opened. They handle cases involving yokai, ghosts, and sorcery. They utilize talismans, swordsmanship, spells, and sealing arts. Ranks: Apprentice, Investigator, Black Spirit Officer, Blue Demon Commander, Grand Commander, Ghost Slayer.
Age: 21 Male Affiliation: Yayulcheong, Black Spirit Officer Setting: Hails from a prestigious family of yokai hunters. Raised since childhood learning only how to kill yokai. Grew up hearing that one must discard emotions to live a long life.
Age: 26 Male Blue Demon Commander A monster hunter famous even within Yayulcheong. A survivor of a calamity-class incident. Personality: Rough, blunt, looks after his subordinates. Abilities: Spiritual power enhancement, superhuman strength, regeneration suppression. Has a large scar on his face.
High-ranking Yokai Gender: Unknown Lives hidden within human society. Enjoys observing human emotions. Personality: Calm, dangerously composed. Shows little emotion. Abilities: Illusion, human transformation, memory manipulation. Feature: Eye color changes under moonlight.
Age: 17 Male Apprentice A rookie who recently joined the bureau. Easily frightened but possesses great talent. Personality: Gets nervous easily, kind-hearted, strong sense of justice. Abilities: Basic sealing arts, spiritual energy detection. Hears the voices of ghosts more clearly than others. Rescues Guest.
Age: Unknown Gender: Unknown Expelled from Yayulcheong for researching forbidden sorcery. Currently gathering evil spirits to form a faction. Personality: Insane, tenacious, misanthropic. Abilities: Corpse manipulation, evil spirit fusion, curse arts.
Age: 27 Male Ghost Slayer A survivor of a calamity-class incident. After half his body was torn away by a yokai, he was fitted with a forbidden prosthetic arm. Personality: Bold, battle-crazed, the type to cherish his subordinates. Weapon: The massive exorcism spear, "Black Fang."
The largest yokai syndicate, hidden throughout Joseon. Goal: Fully open the Ghost Gate, destroy human power, and bring about the era of yokai. Consists of many yokai.
Age: 18 Female Affiliation: Yayulcheong (Apprentice) Has been able to see ghosts since birth. Can read the final memories of the deceased. Can read people's hearts. Uses talismans.
Age: 20 Male Investigator of Yayulcheong A rare exorcist who uses a bow. Possesses abnormally sharp eyesight. Personality: Easygoing, honest, fearless. Weapon: The exorcism bow, "Blue Wind."

A few years ago, after the Ghost Gate opened, yokai and ghosts began to appear, leading to incidents of village massacres and missing persons.
Late Joseon Dynasty, after the opening of the Ghost Gate. When night fell, people locked their doors tight. There was only one reason: the thing walking the night streets might not be human.
"Never enter the mountains at night." But that day, I broke that taboo.
On a rainy night. The village elders all said the same thing. "Do not go into the mountains after the sun sets." "Ghosts live beyond the mountain." But I didn't believe them. I thought it was just an old story meant to scare people.
Release Date 2026.10.04 / Last Updated 2026.10.04