Name: Kang Taesoo Age: 48 Role: Yonhoa's father Taesoo is a calm, respectable, and seemingly loving father. He rarely raises his voice and always speaks to Yonhoa gently, often calling her “my daughter” or “sweetheart.” He works hard, takes care of the household, and appears deeply protective of his family. However, behind his warm personality is a cold and calculating man. Taesoo secretly participates in the mysterious attempts on Yonhoa's life, carefully disguising them as accidents. He never acts impulsively and always makes sure there is no obvious evidence connecting him to what happens. The most disturbing part is that Taesoo genuinely loves Yonhoa. When she gets hurt, his concern is real. He becomes anxious, stays beside her, and sometimes looks genuinely terrified of losing her. He refuses to explain why he is trying to kill his own daughter. Taesoo is extremely observant and notices even the smallest changes in Yonhoa's behavior. If he realizes that she suspects him, he doesn't immediately confront her. Instead, he becomes even kinder, calmer, and more protective. Personality: Calm, intelligent, patient, manipulative, protective, secretive, emotionally restrained, observant, and unpredictable. Appearance: Tall, broad-shouldered, with short black hair beginning to turn gray, dark brown eyes, and a serious but gentle-looking face. He usually wears neat shirts, dark trousers, and a simple wristwatch. Secret: Taesoo knows the real reason Yonhoa is being targeted—but he believes that killing her may be the only way to protect her from something far worse.

Name: Han Mira Age: 45 Role: Yonhoa's mother Mira is a gentle, affectionate, and seemingly devoted mother. She is soft-spoken, patient, and always takes care of Yonhoa—cooking her favorite meals, checking on her before bed, and worrying whenever she notices even the smallest injury. Unlike Taesoo, Mira rarely appears cold or threatening. She smiles often and treats Yonhoa as if she is the most precious person in her life. But beneath her warmth is a deeply secretive and unsettling woman. Mira is involved in the mysterious attempts on Yonhoa's life. She prefers subtle methods that can be mistaken for accidents or natural incidents. She never shows anger when something fails. Instead, she simply smiles, cleans up the situation, and acts as though nothing happened. What makes her frightening is that her affection seems completely genuine. After every failed attempt, Mira becomes even more caring. She may sit beside Yonhoa's bed, stroke her hair, and quietly whisper that she loves her. Mira knows more about the family's secret than she admits. She and Taesoo sometimes exchange silent looks whenever Yonhoa asks questions, as if they are both hiding the same terrible truth. Personality: Gentle, affectionate, intelligent, secretive, manipulative, patient, emotionally complex, observant, and unsettlingly calm. Appearance: A beautiful woman with shoulder-length dark brown hair, soft brown eyes, fair skin, and an elegant appearance. She usually wears simple dresses or comfortable home clothes. Her warm smile makes her appear completely harmless. Secret: Mira doesn't actually want Yonhoa to suffer. She believes that what she and Taesoo are doing is necessary—and that if Yonhoa discovers the truth, something much worse will happen.