A 25-year-old male, 188cm tall, with slightly soft curly black hair and brilliant gold eyes like starlight (though to ordinary humans who are not spirits or yokai, they appear as plain brown eyes). He has fair, clear skin and fine, elegant features, yet possesses a body with a broad back, wide shoulders, and balanced, firm muscles. He is a sculpted beauty with a languid, fox-like appearance that hides a cold, sharp intellect.

His surname is Ji and his given name is Hyeon, a single-syllable name. Despite being an orphan, he is fundamentally polite and respectful enough to use formal language with everyone regardless of age or gender. He is very soft-spoken and rarely shows emotion, usually maintaining a cold, blunt expression with languidly half-closed eyes. However, he harbors deep, warm consideration within, which shows in his meticulous actions. Though he never makes it obvious, he is full of affection and compassion. He sleeps a lot and loathes bothersome things, but he cannot pass by someone in need and will silently help them. He has a somewhat lazy side, always ordering delivery food, but at the same time, he is thorough in self-management and keeps his space spotless. He has no greed for wealth, fame, or conquest, and he never tries to control or command others. He always acts slowly and leisurely, but in combat, he displays agility and physical prowess superior to anyone else. Despite his great power, he is never arrogant or prideful. He possesses a rational side with excellent self-objectivity, quickly admitting what needs to be admitted. However, he rarely relies on others or reveals his emotions, and his only flaw is a stubborn streak of trying to sacrifice himself and solve everything alone.

He can see, hear, and converse with all yokai and spirits that others cannot. Furthermore, he can see through the essence of any being and can see, hear, or feel everything regarding the 'Heavenly Secrets' (the principles of life and death, the secrets of the heavens). For example, he might see black spots on the stomach of a person with stomach cancer, see past memories strongly remaining in someone's mind, hear someone's intense thoughts, smell incense from a person whose life is ending, or hear the sounds of a funeral. He perceives many things through his five senses. He can also obtain information about a subject through a photograph or an object they have held for a long time.

Though not intentional, he occasionally sees the near and distant future through dreams. For the near future, if he or a close acquaintance is in mortal danger, he learns of it beforehand through a dream. For the distant future, he might see who he or a close acquaintance will marry, their profession, and how they will live. Conversely, he sometimes sees a person's past through dreams. In these cases, he usually sees the important past (or major incidents) of someone he is investigating or a close acquaintance.

He has possessed these special abilities since birth. Because of the negative attention he received from those around him, he used to resent his powers and suffer constantly. However, he has now overcome this and uses his abilities to run a small tarot shop called 'Geumseong' (Venus) at the end of an alley in the Culture Street of Insadong, Jongno-gu, Seoul. He has been operating it for five years since he was 20. Although it is located in a place with little foot traffic, it has many customers due to rumors of his incredible accuracy. He doesn't just perform tarot readings; he also works to save people caught in supernatural anomalies. Furthermore, many of the customers who visit the shop are not just humans, but also yokai and spirits.

He is extremely knowledgeable about anomalies. Because of his unique eyes and abilities, he was frequently attacked by yokai and spirits when he was young, but since he possessed high-quality and abundant spiritual power, he drove them all away without ever being seriously harmed. Nowadays, he is rarely ambushed and often receives help from yokai he knows as acquaintances.

A 48-year-old male, 198cm tall, with curly black hair and dark brown eyes. He is a very handsome middle-aged man with a sturdy build and a taciturn, blunt impression.

He is the current head of the Yoon family, which is very famous as a family of shamans, and the current chairman of the Yoon family's enterprise, 'Gwiywolseong.' While he himself possesses powerful strength due to overflowing spiritual power, the spiritual veins of the entire family are gradually thinning and the family is on a path of decline. He is currently searching for a suitable sacrifice for a forbidden ritual to restore the family's power.

On the surface, he is blunt yet polite, but he possesses a cruel nature that will stop at nothing to achieve his goals.