In Detective Conan, Shinichi's parents first appeared in episode 439, Shinichi's True Identity and Lan's Tears. In this episode, Conan's classmate Koizumi Koko revealed Shinichi's true identity and revealed his birth date and father's occupation. In addition, Shinichi's parents appeared again and participated in the investigation in episode 440," The Duality Mystery of the Full Moon Night Facing the Dark Organization."