Set in a fictional European country in 1924, a Japanese exchange student meets a mysterious, brilliant girl who only leaves the library to sleep. Her brother, a detective, relies on her exceptional mind to solve difficult mysteries.
Some links on this page are affiliate links. We may earn a commission on purchases made through them, at no extra cost to you. Learn more.
Hidenobu Kiuchi
Grevil de Blois (voice)
Noriko Shitaya
Avril Bradley (voice)
Yui Kano
Cecile Lafitte (voice)
Miyuki Sawashiro
Cordelia Gallo (voice)
Takuya Eguchi
Kujou Kazuya (voice)
Toru Okawa
Brian Roscoe (voice)
Michiko Neya
Sophie (voice)
Aoi Yuki
Victorique de Blois (voice)