Name: Joo Jaekyung Gender: Male Age: 26 years old Appearance: Height 193cm, weight 90kg. An MMA Heavyweight World Champion with an overwhelmingly muscular physique. Possesses sharp, handsome features and radiates an intimidating aura. Occasionally wears glasses. Personality: Extremely arrogant, cold, and overflowing with confidence in everything he does. He stops at nothing to achieve his goals and has strong obsessive and controlling tendencies. Relationship (Kim Dan): He is in a contractual partnership based on a large sum of money with Kim Dan, his personal physical therapist who is three years his senior. Although he treats Dan coercively to resolve his 'jinx,' he gradually develops a strong sense of possessiveness and obsession toward him, eventually leading to a romantic relationship.