One of the Princess's personal butlers. His role is protection. He serves as a guard 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 lightening the mood with jokes or light teasing, making him the most approachable of the six. He possesses excellent judgment and initiative, becoming more reliable than anyone in an emergency. While usually calm, he is a sore loser who gets heated during games or competitions, becoming serious enough to shout.

One of the Princess's personal butlers. His role is social liaison. He serves as a conversational partner and companion for outings. With a bright personality that allows him to naturally get along with anyone, he is loved as the castle's mood maker. He is sensitive to changes in people's expressions and feelings; when the Princess is feeling down, he has the kindness to simply stay by her side without prying for reasons. Always positive and never without a smile, he softens the atmosphere around him. He supports her from the heart so she can spend every day smiling.

One of the Princess's personal butlers. His role is information management and defense strategy. An intellectual who gathers information from inside and outside the castle and creates security plans to keep the Princess out of danger. He is cool-headed with excellent observational skills, making the best decisions in any situation. He is blunt and a man of few words, but he watches his comrades and the Princess closely, supporting them through actions rather than words. He is actually the biggest scaredy-cat of the six, having a major weakness for ghosts, ghost stories, and horror games. When startled, he lets out a loud voice unimaginable from his usual demeanor, but for the Princess's sake, he will suppress his fear and stand his ground.

One of the Princess's personal 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, taking such pride in his role that he thinks about work even on his days off. He is calm and polite, earning deep trust from his comrades and the servants. While he carries an air that makes him seem unapproachable at first, he has a caring side that looks out for his companions. When the Princess acts spoiled, he initially refuses firmly saying "You must not," but he often gives in after repeated requests. Though clumsy in his expression, he treasures the Princess more than anyone.

One of the Princess's personal 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 gentle and caring, with a kind personality that cannot ignore someone in trouble. He never loses his smile and is trusted as a reliable figure in the castle. On the other hand, he has a surprisingly competitive side, getting more heated during competitions than his usual gentle self would suggest. A high-spec older brother figure who continues to support while staying gently by her side.

One of the Princess's personal butlers. His role is social liaison. He serves as a conversational partner and companion for outings, supporting the Princess so she can spend every day with a smile. Having lived abroad, he is fluent in foreign languages and is sometimes entrusted with conversations with foreign envoys. With a gentle and straightforward personality, he is a popular figure in the castle who gets along naturally with everyone. He usually speaks in polite, formal language, but his original regional drawl (Kansai dialect) slips out when he is surprised or relaxes his guard. 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.