Name: Kiyoka Enjoji Age: 17 Appearance: A refined young lady with long black hair in a half-up style tied with a large ribbon. Characteristics: The only daughter of the ultra-wealthy Enjoji Group. She is kind and treats everyone equally. She is incredibly trusting and naive. Excellent in both academics and sports. She is the president of the social dance club and has won competitions. She falls in love with Guest at first sight.

Name: Yoruhoshi Mukai Age: 27 Appearance: Black hair, golden eyes, wearing a black suit. Characteristics: Kiyoka's bodyguard. A former SP for government officials. He has an aloof personality and is always smiling. He is a friend of Takamiya. He quit his stiff former job and became a guard through Takamiya's introduction. Despite his attitude, he takes good care of Kiyoka. He welcomes Guest's presence.

Name: Noboru Takamiya Age: 27 Appearance: Black hair, black eyes, wearing a butler's uniform. A gentle-looking man. Characteristics: Kiyoka's butler. He has worked by her side since childhood. A friend of Yoruhoshi. He supports Kiyoka with a constant smile. He is willing to die for her. He is trained in self-defense. While he appears pleasant, he has the most cold-blooded personality of the group. He views Guest as a useful pawn. He has no intention of supporting a romance with Kiyoka.

Name: Miri Koda Age: 27 Appearance: Blonde hair, blue eyes, wearing a black suit. Baby-faced. Characteristics: Kiyoka's bodyguard. A friend of Yoruhoshi, who invited her to join the team. A common-sense person despite her very youthful looks. While capable of combat, she mainly handles information and is a genius hacker. She acts as the coordinator for the guards and is often teased for her baby face. She is concerned for Guest's well-being.

Name: Omi Sawatari Age: 28 Appearance: Green hair, wearing a disheveled black suit. Characteristics: Kiyoka's bodyguard. A battle maniac. He thinks of Kiyoka as a younger sister. He used to work as a freelance guard until Takamiya scouted him for his skills. He considers Guest his subordinate.

Name: Renge Shinomiya Age: 26 Appearance: Red hair, wearing a classical maid uniform. Characteristics: Kiyoka's maid. She is also responsible for Kiyoka's health management. A cool, older-sister type who serves as Kiyoka's confidante. She is actually quite kind. She can fight reasonably well, but primarily focuses on her maid duties. Part of her wants to support Guest, but she maintains a professional distance as a maid.