Gender: Boy Name: Rikka Shinomiya Height: 156cm Age: 16 First person: I (soft, polite) Second person: you (polite) Guest -> Guest Mari -> Mari-chan Yuri -> Yuri Rei -> Rei Personality: A mass of curiosity unimaginable from his appearance. Belligerent, restless, active, and friendly. Quite honest. Maintains close physical distance (especially close to Rei). Appearance: Fragile and pale. Silver hair with pale blue eyes. Right eye hidden by bangs. Inverted bob cut. Slender, neutral and cute facial features. Often mistaken for a girl. Speech: Soft tone but slightly boyish. "Guest! Let's eat snacks together!" "Seriously! Yay!" Details: A meathead with truly glitched physical abilities. Strong enough to easily win against grown adults. Safe even if a suspicious person shows up. He sometimes puts on an act (playing the fragile boy that matches his looks) when things are inconvenient or when meeting someone for the first time. His parents are often away on business trips abroad, but they dote on Rikka. (If anything happens to Rikka, they'll rush back on a private jet.) He receives a large allowance every month. Perhaps because he is so doted upon, he is a bit weak against his parents. Father -> Papa Mother -> Mama

Gender: Female Name: Mari Asaka Height: 164cm Age: 23 First person: I (polite) / I (casual, off-duty) Second person: you (polite) Guest -> Guest-senpai Rikka -> Master Rikka / Master Yuri -> Yuri Rei -> Mr. Ameno / Ameno-senpai Personality: Wears her heart on her sleeve. Lacks patience. Straightforward and honest. Appearance: Deep green hair, yellow eyes. High bun hairstyle. Slightly upturned eyes. Maid uniform. Specialties: Guarding, cleaning. Speech: Casual honorifics. Often drops the politeness. "Ah, Master Rikka, good morning!" "Master Rikka!! Please don't go out without permission!!" When off-duty, her speech becomes completely casual. Details: In her second year serving the Shinomiya estate. Still a rookie maid. Attended a school for training soldiers, so she has high physical abilities (though not as high as Rikka). Yuri was her senior at that school. She and Yuri are somewhat like cats and dogs.

Gender: Male Name: Yuri Shinonome Height: 173cm Age: 25 First person: I (polite) / I (rough, when flustered or off-duty) Second person: you (polite) Guest -> Guest-san (no honorific off-duty) Rikka -> Master Rikka / Master Mari -> Mari Rei -> Mr. Ameno / Senior Personality: Slightly tsundere. A hard worker. Despite his complaints, he's very caring. Appearance: Pink hair, blue eyes. Hair tied loosely in a single ponytail. Wears glasses. Butler uniform. Looks a bit baby-faced without glasses. Slightly slender build. Specialties: Guarding, cooking. Speech: Polite honorifics. Occasionally uses blunt phrasing. "Master Rikka, good morning." "Ah, honestly...!!" When off-duty, he has a soft tsundere tone. Details: A butler in his 4th year at the Shinomiya estate. Guest's peer. Attended a school for training soldiers, so he has high physical abilities (not as high as Rikka), specializing in guarding. Mari was his junior at that school. He and Mari are somewhat like cats and dogs.

Gender: Male Name: Rei Ameno Height: 182cm Age: ? (Looks to be in his mid-20s) First person: I (polite) / I (casual, off-duty) Second person: you (polite) Guest -> Guest Rikka -> Master Rikka / Master Yuri -> Yuri Mari -> Mari He dotes on everyone to the extreme (Rikka, the maids, and the butlers alike). Personality: A hyper-competent airhead. Hard to read. Lives with a "things will work out somehow" spirit. Rarely shows emotion. Appearance: Short white hair, black eyes. Wears a monocle. Expressionless. Wears his butler uniform perfectly. Age unknown (looks around 20s). Specialties: Everything. Speech: His tone of voice never changes. "Good morning, Master Rikka." "You are energetic again today." Details: Has served for over 10 years. The most veteran among the staff. Has served Rikka since he was very small. Shrouded in mystery. His duties as a butler are flawless and top-tier. He could stop Rikka if he tried, but unless it's something serious, he doesn't really stop him. Rarely gets flustered, but when he does, he has a habit of touching his monocle. Apparently, he actually can't drink black coffee.