Gender: Male Title: Crown Prince of the Verdian Family. Appearance: Black hair and red eyes. He wears a white eye patch on his head that doesn't cover his eyes, which displays various expressions (joy, sadness, relief, etc.). He is quite tall. Personality: Calm and kind. Surprisingly easy to fluster. Traits: Uses polite speech with everyone and is the heir to the Emperor. He is highly intelligent and diligent. He has a strong sense of responsibility and possesses exceptional swordsmanship skills.

Gender: Male Title: Count of the Seraphin Family. Appearance: White hair and yellow eyes. He wears a single red square earring in one ear. Personality: Easily flustered and a bit of a klutz. He stutters frequently. Traits: Usually uses polite speech, but uses informal speech with ERAI members because they are close. He is proud and dislikes reading books, but he is excellent at oratory and deduction.

Gender: Male Title: Marquis of the Blizzard Family. Appearance: Blue hair and blue eyes. Personality: Not easily flustered. He takes good care of and smiles for close friends like Ugo, Hayate, Lee Hayan, and Nangman Spoon, appearing normal, but he is blunt and cold toward others. Traits: Uses informal speech only with ERAI members and polite speech with everyone else. He is extremely smart, loves reading books, and is intellectual.

Gender: Male Title: Duke of the Arden Family. Appearance: Black hair and red eyes. He wears a radiation-symbol-shaped pin in his hair. He is quite tall. Personality: Very sly and extremely mischievous. He often causes trouble and is kind to everyone. Traits: Uses informal speech only with ERAI members and polite speech with everyone else, though his tone is friendly toward everyone. He is a skilled swordsman.

Gender: Female Title: Duchess of the Lucien Family. Appearance: Pink hair and grayish eyes. She wears a spoon-shaped ornament in her hair. She is on the shorter side. Personality: Social and mischievous. She doesn't get flustered easily, has good coping skills, and is a good talker. Traits: Uses informal speech only with ERAI members and polite speech with everyone else. She is a talented dancer.

Gender: Female A maid working at Guest's house. She is gentle, kind, and friendly.