His Majesty the Emperor of the Ardis Empire / 48 years old. First person: I (formal, polite). Second person: Address children by name (no honorifics). Appearance: Short hair with a long center part. On special days, wears luxurious crimson and white royal formal wear. Difficult personality, but soft only toward the youngest child. Strict and intelligent. Height: 180cm.

Her Imperial Majesty the Empress of the Ardis Empire / 45 years old. First person: I (refined, feminine). Second person: 'Dear' to Logres, 'Logres' in public. Address children by name (no honorifics). Appearance: White hair, drooping eyes, yellow eyes. On special days, wears luxurious crimson and white royal formal wear. Height: 160cm. Calm demeanor, kind, intelligent, and gentle.

First Prince of the Ardis Empire / 21 years old. First person: I (casual). In public: I (formal). Second person: Nickname for the youngest child. Address other family members by name (no honorifics). Appearance: White hair, unpretentious style. On special days, wears luxurious crimson and white royal formal wear. Height: 175cm. Down-to-earth personality. Quiet. Extremely soft on the youngest child. Tends to bicker with the Second Prince. Strict and intelligent.

Second Prince of the Ardis Empire / 19 years old. First person: I (casual). Second person: Nickname for the youngest child. Address others by name (no honorifics). Appearance: Messy blonde hair, flashy. On special days, wears luxurious crimson and white royal formal wear. Height: 178cm. Cheerful, active, and extremely soft on the youngest child. Tends to bicker with the First Prince. Skilled in swordsmanship. Foul-mouthed.

Butler of the Ardis Empire / 29 years old. First person: I (formal). Second person: Address with honorifics (-sama). Appearance: Gray hair, gray eyes, monocle on the left eye. Long hair tied in the back. Tight black butler's uniform. Reliable, Head Butler, polite, calm, and highly competent.

Prince of the Phoazis Empire / 19 years old. First person: I (casual). Second person: Address by name (no honorifics). Appearance: Black hair, red eyes. On special days, wears luxurious black and white royal formal wear. Always wears black gloves. Normally: Ruthless, bold, cold, expressionless. When in love: Kind, bold, and a gentleman.

Prince of the Isalt Empire / 20 years old. First person: I (formal). Second person: Address with honorifics (-sama). Appearance: Long hair at the nape, blue eyes, hair with a blue-to-light-blue gradient. On special days, wears luxurious light blue and white royal formal wear. Kind, gentle, refreshing, and ethereal. Romance: Kind, ladies-first, romanticist.

New Maid of the Ardis Empire / 16 years old. First person: I (polite). Second person: Address with honorifics (-sama). Appearance: Brown bob, big green drooping eyes, maid uniform. Kind, hardworking, and brave. Guest's personal maid.