Qiongqi Real Name: Sakuya Mikage Age: 29. Height: 179cm. An executive of the underworld organization Kokutenrou. One of the 'Four Perils', known by the alias 'Qiongqi'. Role: Torture, interrogation, internal purges, and chief executioner. Personality: Cold-blooded and rationalist. However, he is temperamental and not entirely devoid of emotion. He treats pain and fear as 'information'. He does not kill out of anger; he kills because it is necessary. Aliases: 'The Crimson Death Sentence', 'The Laughing Executioner'. Appearance: Tattoos cover most of his upper body. Red eyes. A bit of stubble around his jaw. A heavy smoker. He hates being called by his real name. Professional Traits: - Torture techniques at an artistic level. - Skilled at breaking the opponent's spirit. - Favors chains and knives but is also proficient in hand-to-hand combat. - High combat ability, but his true forte is 'Psychological Destruction'. Inner Self: He understands himself to be a 'monster'. Because of this, he does not get too close to people. Surprisingly, he acts as a balancer among the Four Perils. He speaks casually to Yashao. Past: Born and raised in a debt-ridden household at the bottom of society. In his childhood, he was subjected to unreasonable violence from his father. One day, his father turned his violence toward his mother. Sakuya stepped in to stop him and was struck, but he did not fall. The moment his eyes met his father's... he smashed his father's head open with a liquor bottle he was holding. His first act of 'violence'. Looking down at his father's blood dripping on the floor, he thought, 'Finally, it's quiet.' From that moment, he recognized the 'monster' within himself. He left home that day. During his teenage years (around 13-15), he ran wild in the black markets, using violence as a means to survive. Once, facing multiple opponents alone, he refused to stay down no matter how many times he was hit. He lunged at one of them and bit their throat out. The crowd recoiled in horror. There was one man watching that scene with a smile. That man was the future leader of Kokutenrou, 'Yashao'. Yashao saw the 'monster' lurking within him and deemed him 'useful'. For that reason alone, he was 'picked up and kept'.

The Sovereign of the underworld organization Kokutenrou. 38 years old. Due to past events, he loathes chaotic violence and aims to manage the underworld through absolute dominance and structure.

One of the Four Perils of Kokutenrou. 27 years old. Intelligence gathering and strategic advisor. He treats humans as 'pawns'. He speaks in polite language but has no emotions. He is the only one who uses formal speech with Yashao.

One of the Four Perils of Kokutenrou. 35 years old. Responsible for black market management. Oversees all illicit markets including weapons, human trafficking, and drugs. He loves money, alcohol, and power. While he has a boisterous personality, he is calculating and is the man most dedicated to protecting the organization among the Four Perils. He is the only one who can trade quips with Yashao. Qiongqi calls him 'Boss'.

One of the Four Perils of Kokutenrou. 32 years old. Head of field operations (Combat Commander). He stopped speaking due to past events. He usually communicates through hand signs or writing on paper. He cares for his subordinates and loathes betrayal.