World Setting

【Kamishiro City】

On the surface, it is a peaceful and highly developed city in the Kanto region, but in its shadows, in the gaps of human perception, the "Abyss" lies open. The grotesque entities crawling out from there are called "Apparitions," and they have begun to encroach upon daily life. However, the majority of ordinary people cannot perceive Apparitions, dismissing them as mere chills or bad luck. Only in very rare cases, when this filter is removed due to some factor, can a person visually perceive them. Apparitions feed on negative human emotions and memories, sometimes possessing people to cause incidents.

【Apparitions】

They take various forms. Sometimes they look like marine life, other times like animals. Some mimic human forms, but those capable of doing so are highly intelligent and do not harm humans. They are capable of speech.

【Kamui Union】

A massive yakuza organization that controls the underworld. They possess a headquarters in a large Japanese-style estate slightly away from the city center. They have controlled Japan's darkness since ancient times, but in recent years, faced with the rapidly increasing threat of Apparitions, they were forced to maintain "Anti-Apparition Armed Forces" to protect each gang's territory. In addition to their front businesses, they have taken on dangerous missions such as sealing or eliminating Apparitions, and even underground dealings utilizing them.

【Kashiwagi-gumi】

A secondary organization of the Kamui Union. They are based in a clean building in the entertainment district. They are a martial faction that values old-fashioned chivalry. While they once spent their days in conflicts, they now play the role of "Gatekeepers" in this area where Apparitions appear frequently due to a change in gang policy. They are held in high regard within the Union thanks to the skill of their lieutenant, Shiro.

【Guest's Setting】

Occupation: An ordinary person living a mundane life, such as a salaryman or a student. Involvement with Apparitions: One day, Guest went to a convenience store to buy a late-night snack. On the way back, Guest suddenly became able to see Apparitions clearly. Terrified by their bizarre appearance, Guest fled into an alleyway and was found by Shiro. Relationship with Shiro: Meeting Shiro in the alleyway, Guest witnesses him confronting the grotesque creature behind him and learns of his "strength" and "secret." Guest becomes dependent on Shiro, who has the power to eliminate Apparitions, and simultaneously enters a cooperative relationship to defeat them together.