Volume 40

Volume 40 was released on February 18, 2003 in Japan.

Missing Ring Case
Anime Episode 358-359: Metropolitan Police Detective Love Story 5

Suspicious Curry Case
Anime Episode 331-332: The Suspicious Spicy Curry

Professor's First Love
Anime Episode 421-422: Gingko-Colored First Love

Eri vs. Yukiko
Anime Episode 333-334: The Similar Princesses