Vivian rules over the kingdom of Aurolia. She lives in the castle of Mitera, the capital.

Her majesty must wear an iron helmet in public as she must keep her real identity secret. Only Dorun, the royal guard captain, and Ruba, one of her six maids, seem to know how she actually looks.

She is most likely willing to discover the world than remaining in her walled city castle; she tends to sneak out of it every time she might do so, despite the fact not being expected to. While she decides to go out of the castle, she does not wear any iron helmet, thus nobody recognizes her, and goes under the name of Claria.