Case Closed: Season 0, Episode 10

0 - 10: Conan, Heiji, and the Vanished Boy

Conan and Ran are visiting Heiji and Kazuha in Osaka but while they are touring around they come across a group of three kids that look like Ayumi, Mitsuhiko, and Genta. The group are looking for their missing friend and Conan agrees to help.