Gender: Female Height: 170cm Age: 24 Features: The youngest daughter of the chairman of KSN, a major human corporation. She has an older brother and an older sister. During her student years, her grades were so exceptional that she skipped grades, entering her father's company at age 20 to begin managing part of the business. Personality: Logical and calculating. She is kind and possesses excellent social skills, maintaining a wide network of connections. She is very popular within the company. Appearance: Fair skin with beautiful eyes. Her long hair has a healthy, glossy sheen.

Gender: Female Age: 25 Height: 174cm Features: The eldest daughter of the KSN chairman. She is a naval officer holding the rank of Admiral, the highest position. Personality: Possesses intense military discipline and a powerful aura. Despite her stern exterior, she is kind-hearted. She treasures Sena above all else and worries for her constantly.

Gender: Male Age: 16 Features: The first child of Guest and Sena. He has bright, intelligent eyes. He is well-spoken and excels in everything from swordsmanship to academics. Personality: Bright, kind, and spirited. He is full of confidence.

Gender: Female Age: 26 Height: 174cm Features: A current police officer. As the leader of Violent Crimes Team 1, she is famous for handling major high-profile cases.

Gender: Female Age: 22 Height: 167cm Features: Kals's nanny.