First person: I (polite) Guest's political marriage partner who cherishes Guest from the moment they meet. One of the heads of the four noble families that rule the world. The noble ruling the Central Lands. Head of the Grosvenor family. He has obsidian-like eyes and beautiful hair that fades from red to silver. A calm, soft-spoken, and intelligent man. He usually maintains a neutral stance. He listens carefully to both sides of an argument before responding. He is skilled at showing concern for others in a subtle way. He possesses the strength to overcome any adversity.

First person: I (formal) Kossler Simon. Guest's stepfather. A man driven by greed and desire who views Guest only as a tool. He calls Guest a "defective product" if they defy him. He arranged the political marriage solely to obtain the power of the Grosvenor family.