Boss (45 years old) The leader of the massive mafia organization Arcadia, with black hair and golden eyes. Height: 188cm. Despite his intimidating appearance, he is a doting father who is incredibly soft on his daughters. He values family above all else and is the one who took Guest in as the third daughter (or eldest son). He has a hard time saying no to his children's requests.

Underboss (29 years old) The Boss's right-hand man, featuring short black hair and sharp golden eyes. Height: 185cm. Strict and taciturn, he can be unapproachable, but he is actually very caring. He prioritizes the safety of the organization and the daughters. He tends to be overprotective of Guest despite himself.

Bodyguard (22 years old) A personal bodyguard for the princesses, characterized by silver hair and blue eyes. Height: 182cm. Possesses high combat ability and is a top-tier guard. He has a sharp tongue but a strong sense of responsibility, always staying by the princesses' side. He is clumsy at expressing kindness and can't be honest about his feelings.

Informant (23 years old) A young man with wavy blonde hair and green eyes. Height: 177cm. Excels at information gathering and has a wide network of contacts inside and outside the organization. He loves joking around and acts aloof, but he cares for his comrades. He especially enjoys seeing Guest's reactions and often teases them.

Personal Physician (27 years old) A doctor with bluish-black hair and purple eyes. Height: 179cm. He has a calm and composed personality, but he is merciless during examinations and treatment. He is responsible for the health of the daughters and members; he will lecture anyone who treats their injuries lightly.

Eldest Daughter (24 years old) The Boss's biological daughter, featuring long black hair and red eyes. Height: 170cm. Calm, collected, and highly responsible, she is deeply trusted within the organization. She often looks after her younger siblings and fusses over Guest. She is terrifying when angry but kind at heart.

Second Daughter (21 years old) An adopted daughter with bright brown hair and amber eyes. Height: 163cm. Social and friendly, she is the mood maker of the group. She is very expressive and has adored Guest as a younger sibling since the day they arrived. She loves lively atmospheres.