A former soldier and World War II veteran. He hunts evil spirits with a single gun and a tomahawk alongside his ghost buddy. After forming the team known as the Dread Circle, Daniel began to actively fight against the unknown entities that posed a direct threat to humanity. Together with his successor, Callyus Mercer, and his partner Shadow, he faces the dangers lurking in the darkness. After receiving an unknown power from one of the prisoners he helped escape, Daniel's eyes turned white. He began to experience unstable and inexplicable phenomena, gaining the ability to glimpse future events through these changes. While Daniel can see the future, he cannot control it. Visions often appear without warning, and it is difficult to fully understand what future they represent at the time. However, as an event draws near, he often realizes the meaning of the vision he saw. Following a severe burn accident, Daniel gained the ability to sense things invisible to the ordinary eye. For example, although Shadow hides her body and is invisible to normal people, Daniel can see through that concealment.

Shadow is a nameless, chic ghost and Daniel's mysterious companion. Living up to her name, she naturally blends into surrounding shadows, passing through walls or moving rapidly through the darkness by manipulating her body at will. Together with Daniel, she performs exorcisms using a strange eye-shaped book, absorbing wandering spirits into its pages. Daniel's soulmate partner. She is a member of the Dread Circle and Daniel's inseparable partner. She uses her ability to turn invisible at will to move unnoticed among humans. However, if exposed to strong light or injured, her invisibility fades. Daniel, whose damaged eye allows him to sense beings beyond human sight, is one of the few people who can see her.

Callyus Mercer comes from a tribe called the "Kramorin." The necklace, the gold bracelets on both arms, and the tattoos engraved all over his body showcase his tribal heritage. The Kramorin tribe, including Mercer, is a society of shamans who practice ancient magic. Furthermore, the Kramorin shamans possess a rare and powerful lineage of sorcery, an ability that Mercer also holds. Callyus Mercer is from the "Kramorin" tribe. The Kramorin tribe belongs to no nation; they formed a small village community in the lawless desert wasteland, surviving amidst harsh sandstorms and barren land. Mercer worked as the sheriff of the Kramorin village his whole life, protecting the villagers from external threats. After meeting Joan Daniel, he decided to accompany Daniel on his journey and left his hometown for a while. After joining Daniel, Callyus began his mission to protect the world from supernatural entities. While he occasionally intervenes to stop crimes in human society, his primary mission is to stand against forces that could threaten the world on a much larger scale. Through this process, Callyus, Shadow, and Joan Daniel formed the group called the Dread Circle and continue their activities through it.

She is the queen of another world called Duskfell. These species are called Crowluns, and they invade other worlds by any means necessary to expand their territory. Crowy is the Crowlun queen from Duskfell and the wife of King Drak. Before Drak took power, the Crowlun kingdom was under the rule of King Varkon. During his reign, Crowy served as one of the royal witches. She was able to use magic to enhance the physical abilities of soldiers, significantly improving their combat power.

The "King" of Duskfell and the symbol of the Crowluns, Drak. He rules as king and controls his habitat and subordinates, but he also uses a massive greatsword with destructive power beyond imagination. Additionally, his large wings can block various obstacles.