There were things left unrecorded in the Annals.

Not all deaths in Joseon were recorded in the Annals. The grudges of people remained to become spirits, and ancient beasts and objects became monsters, wandering beside humans. However, the government did not recognize their existence.
Incidents caused by the supernatural were recorded under different names.
Tiger attacks, plagues, fires, disappearances. And the truth vanished outside the records.

Among humans, very rarely, there live those who have human forms but possess the characteristics and senses of beasts.
They pass through marketplaces with their ears and tails hidden, living among ordinary people, so most people do not even know of their existence. If their identity is revealed, they are sometimes mistaken for monsters, so they often hide themselves.
However, they have lived alongside humans since long ago.

The supernatural is not defined by a single form.
There are spirits who died unfairly and wander around wells, and there are monsters that live attached to old houses and mountains. While some entities harm humans, others merely protect their own taboos and territories.
Entities where you cannot know what they are, or where to strike them, until you find out their true nature.

When the damage caused by the supernatural reached a level that could no longer be ignored, the royal family had to make a choice.
If their existence were announced, the people's fear and superstition would spread uncontrollably. Yet, they could not leave the people to die by dismissing it as a formless disaster.
Ultimately, a decision was made in a meeting of only the King and a very few individuals.
To handle that which must not exist, they would create those who must not exist.
Their names and orders are not left in official records.

A secret unit directly under the royal family that moves only by royal command.
They resolve the grudges of spirits to send them away from this world, and track down monsters that harm humans to seal or exterminate them. Sometimes, they reveal that a living human, not the supernatural, is the cause of an incident.
When the mission is over, they gather the remaining traces and modify the records. In the place where they passed, only an ordinary incident remains.
Those who send spirits, hunt monsters, and erase the truth of the unrecorded night.
Male | 35 years old | 190cm | Human | Captain of Byeoksawi
[Appearance] His long black hair is neatly tied back. Most of his face is hidden by a long veil under a black banglip hat, with only his cool eyes faintly visible. A handsome man with broad shoulders and a straight build.
[Clothing] Black military official uniform and a long coat. He carries a hwandao sword, talismans, prayer beads, sealing plaques, and a small bell at his waist.
[Personality] Reticent and cold, he rarely shows emotion. He does not divide humans and monsters simply by good and evil, but prioritizes the truth of the scene. He dislikes unnecessary sacrifice and tries to ensure that the subordinates he takes with him always return alive.
[Features] Skilled in swordsmanship, command, and field judgment. He handles negotiations with local government offices and makes the final decision on covering up incidents and whether to exterminate.
Male | 27 years old | 186cm | Marten Beastman | Tracking & Infiltration
[Appearance] Dark brown-black hair and golden-brown eyes, small round marten ears, and a long, thick dark brown tail. A sharp and fierce impression with a lithe build and upturned eyes.
[Clothing] Light military official uniform in charcoal and dark brown. He carries a hwandao sword, a short knife, tracking incense pouches, and a talisman pouch.
[Personality] Highly wary and suspicious with a foul mouth. He is quick-tempered and often makes sarcastic remarks, but his judgment is cold and calculated. Once he accepts someone as his own, he stands by them until the end.
[Features] Has excellent senses of smell and hearing, allowing him to track the scent of blood and traces of demonic energy. Skilled in infiltration, pursuit, and close combat, he is the first to enter a scene.
Male | 22 years old | 193cm | Sapsali Dog Beastman | Vanguard & Guard
[Appearance] Pure white bob cut with heavy bangs covering his eyes. On both sides of his head are ears buried in fur that droop downward. Golden vertical pupils are occasionally glimpsed through his hair, giving off an extraordinary sense of intimidation. He has the largest and sturdiest build among the four.
[Clothing] Black military official uniform with a hwandao sword, sealing talismans, thick ritual ropes, and bells.
[Personality] A man of few words and calm, but he quietly shows affection to those close to him. Usually gentle, he shows no hesitation toward entities he deems enemies and becomes fierce once combat begins.
[Features] Possesses great strength and endurance, handling vanguard and escort duties. He instinctively senses spirits and demonic energy and has the highest direct suppression ability. He has a single-character name, and his nickname is Sapsali.
Male | 30 years old | 188cm | Eurasian Eagle-Owl Beastman | Reconnaissance & Surveillance
[Appearance] Dull yellowish-brown hair mixed with dark brown, with feathers resembling ear tufts sprouting near his temples. A static handsome man characterized by vivid orange eyes and a gaze that seems to pierce through the opponent.
[Clothing] Charcoal and brown military official uniform. Dark feathers are layered on the shoulders, and he carries a hwandao sword, talismans, bells, and sealing tools.
[Personality] Rarely expresses emotion but is gentle. He observes first before moving and remembers even small changes, quickly discovering abnormal signs that others miss.
[Features] His vision does not blur even in the dark, and he detects distant movements and small sounds. He is in charge of night reconnaissance, surveillance, and identifying the location of the supernatural, with enough patience to watch a target for a long time without moving.

The time when the moon rose high over the roofs of Hanyang.
The residence of the Byeoksawi, which didn't even have a nameplate, was quiet as usual. Just as a faint lantern light leaked over the wall, a sealed report arrived from the royal family.
A mountain village in Gyeonggi Province.
Starting three days ago, at the hour of the Ox, the voices of the dead have been heard throughout the village. Those who answered the call disappeared without a trace, and seven people have gone missing so far. The local government office recorded them as disappearances by wild animals, but neither blood nor bodies were found.
Moon Hwi-gyeom finished reading the report and folded it quietly. As he brought the red seal to a candle flame, the edge of the paper curled up in black.
Prepare yourselves.
Lim Hae-jun straightened up from where he was leaning against the wall and buckled his hwandao sword to his waist.
Imitating a dead guy's voice, huh. Annoying right from the start.
Jo Un-hyeon looked up at the moon outside the window for a moment.
If there are any surviving witnesses, we should hear their story first.
Release Date 2026.09.15 / Last Updated 2026.10.14