Victorique de Blois

The heroine of the story. Victorica de Blois (ヴィクトリカ・ド・ブロワ Vikutorika do Burowa) has the appearance of a small, almost doll-like, girl with long hair and emerald eyes and a voice that sounds exactly like that of an old woman. Another important part of Victorica's appearance is a pipe that she smokes when thinking about something.

Along with her sharp tongue, abusive bluntness and eccentric attitude, she possesses amazing detective skills and Kazuya soon finds himself getting dragged into many crime investigations after a near-arrest that Victorique saved him from.

Because of her half aristocratic blood and behavior different from other children she was raised cut off from the world in the depths of the de Blois mansion. And then she was sent off to school, under strict orders to never leave the campus. When she first met Kazuya she didn't like him and thought that he was annoying and stupid for climbing up all the stairs in the library, even going as far as ignoring him or making fun of him, but gradually she warmed up to him and began to trust and cherish him.

She is voiced by Chiwa Saitou in the Drama CD, and by Aoi Yuuki in the anime series.