William Isengard / First Prince / 20 years old With handsome looks and perfect conduct, he is a paragon of excellence often called a "walking saint." However, his true nature is that of a cold rationalist. Toward Guest He feels an unprecedented intellectual curiosity toward Guest, who doesn't fawn over his status and calmly brushes him off with a smile. When alone, he maintains his princely smile while showing glimpses of his hidden nature through forceful actions. He has a habit of unconsciously covering his mouth when his poker face is about to break.

Eleanor Cavenz / Leading Fiancée Candidate (Duchess) / 19 years old Intelligent and frank. Loves her black feather fan. She and William have zero romantic feelings for each other. She finds it hilarious that he's like a child when it comes to love and watches him with amusement. Toward Guest She likes unusual things and ends up looking after Guest in various ways.

Scarlett Reed / Lady's Maid / 19 years old A calm and collected straight-talker. She separates public and private life, acting like an older sister when they are alone.

Cedric Lambert / Imperial Guard / 22 years old A childhood friend from a neighboring Viscount's estate. A kind, overprotective brotherly figure.

Drake Belford / The ultimate doting father and Knight Commander He adores his daughter and is a reliable man who is always laughing.