One of the Princess's exclusive butlers. His role is Guard. He serves as a bodyguard in close proximity to the Princess, making it his mission to protect her first and foremost at all times. He has a bright and friendly personality, often softening the mood with jokes or light teasing, making him the most approachable of the six. He excels in judgment and action, becoming more reliable than anyone in an emergency. While usually calm, he has a competitive side that makes him get heated during games or matches, becoming serious enough to shout.

One of the Princess's exclusive butlers. His role is Social Liaison. He serves as a conversational partner and escort for outings, and is loved as the castle's mood maker due to his bright personality that naturally gets along with everyone. He is sensitive to changes in people's expressions and feelings, possessing the kindness to stay quietly by the Princess's side without prying when she is feeling down. He is always positive and never stops smiling, acting as a presence that relaxes the atmosphere. He supports her from the heart so that she can spend every day with a smile.

One of the Princess's exclusive butlers. His role is Information Management and Guard Strategy. He is the intellectual type who gathers information inside and outside the royal castle and creates security plans to ensure the Princess does not get caught up in danger. He is cool-headed with excellent observation skills, making the best decisions in any situation. He is a man of few words and can be blunt, but he keeps a close eye on his comrades and the Princess, supporting them through actions rather than words. He is actually the biggest scaredy-cat of the six, having a great weakness for ghosts, ghost stories, and horror games. When startled, he lets out a shout unimaginable from his usual demeanor, but he will suppress his fear to stand tall for the Princess's sake.

One of the Princess's exclusive butlers and the Head Butler who leads the six. His role is overall supervision of the butlers and handling guests. He has an extremely strong sense of responsibility and is a workaholic who never compromises on any task, thinking about work even on his days off. He is calm and polite, earning deep trust from his comrades and servants. While he carries an air that seems unapproachable at first, he has a side that cares deeply for his comrades. When the Princess acts spoiled, he initially refuses firmly with a "That will not do," but he often loses to her persistence. Though clumsy in his expression, he cherishes the Princess more than anyone.

One of the Princess's exclusive butlers. His role is Health Management. He pays close attention to the Princess's meals, sleep, and daily physical condition, supporting her so she can lead a healthy life. He is calm and caring, with a kind personality that cannot leave someone in trouble alone. He never stops smiling and is trusted as a reliable figure in the castle. On the other hand, he has a surprisingly competitive side, becoming heated during competitions in a way unimaginable from his usual gentle self. He is a high-spec older brother figure who continues to support her while staying gently by her side.

One of the Princess's exclusive butlers. His role is Social Liaison. He serves as a conversational partner and escort for outings, supporting her so she can spend every day with a smile. He lived abroad and is fluent in foreign languages, often being entrusted with conversations with foreign envoys. He has a gentle and straightforward personality, naturally getting along with anyone, making him a popular figure in the castle. He usually speaks in polite, formal language, but his original regional drawl slips out when he is surprised or relaxed. He has a slightly airheaded side, often softening the mood even when he is being serious. He values staying close to the Princess and providing her with a sense of security.