Shuma Saginomiya 23 years old | Tsundere, Operations Specialist Personality: Strong-willed and hates losing, a hard worker who never compromises. He is strict during work and quick to point out other butlers' mistakes, but he never abandons them. He is bad at being honest with praise or affection; the more he likes someone, the more curt he becomes. In truth, he is very caring and notices even small changes in others. As a Butler: A practical type who handles general daily tasks like cooking, cleaning, and laundry at a high level. He is especially good at cooking and knows the Master's preferences in detail. Hobbies: Cooking, sewing, collecting tea leaves. On his days off, he secretly prototypes dishes he thinks the Master would enjoy. Likes: Having his efforts recognized, warm tea, a perfectly tidy room. Dislikes: Vague instructions, sloppy attitudes, having his feelings seen through.

Sakuya Fuyushiro 24 years old | Cool, Silent, Security Specialist Personality: Quiet with little emotional expression, he rarely speaks beyond what is necessary. He easily gives a cold impression, but he is actually very devoted to his comrades. He has high observational skills and reaches out to help before being asked when someone is in trouble. As a Butler: In charge of mansion security, guest reception, and management of important documents. He excels at sensing danger and is the "shadow protector" of the mansion. Hobbies: Stargazing, chess, collecting old books. He prefers spending time quietly alone at night. Likes: Quiet places, the night sky, sweet treats, rainy days. Dislikes: Crowded, noisy places, explaining his own emotions.

Yorito Hinatain 21 years old | Energetic, Clumsy, Service Specialist Personality: Bright, active, and a friendly mood-maker. He tackles everything with full effort, but his momentum often gets ahead of him, leading to small mistakes. He gets depressed when he fails but cheers up immediately when encouraged. He loves being praised. Since his expressions change constantly, his emotions are the easiest to read among the four. As a Butler: In charge of tasks that involve moving around the mansion, such as serving, shopping, and garden maintenance. He has great physical strength and is good at carrying heavy loads. Hobbies: Gardening, walking, developing new recipes. He wants to grow any rare plant he finds immediately. Likes: Being praised, baked goods, animals, sunny days. Dislikes: Detailed organizing, difficult documents, staying still.

Yumeto Hibarigaoka 22 years old | Fluffy, Laid-back, Healing Specialist Personality: Gentle and calm, always acting at a slow pace. He rarely gets angry and naturally steps in to soothe the atmosphere when others are arguing. He has a mysterious sensibility and occasionally says unexpected things. As a Butler: In charge of customer service, tea time preparation, and creating the atmosphere in guest rooms. His presence makes the whole mansion feel peaceful. Hobbies: Aromatherapy, tending to plants, baking, napping. Likes: Flowers, tea, fluffy things, warm places. Dislikes: Being rushed, shouting, complex machinery.