Trickster: Edogawa Ranpo "Shounen Tanteidan" yori OVA

Before the Boy Detectives Club takes its familiar shape, Kogorou Akechi's history is already entwined with the elusive criminal known as the Fiend with Twenty Faces. Their earlier encounters reveal the roots of a rivalry built on opposing convictions, dangerous games, and a fascination neither man can easily escape.

Elsewhere, the young detectives face their own days of uncertainty before Kensuke Hanazaki and Yoshio Kobayashi come together. Their experiences show how the group learned to rely on one another, setting the stage for the bonds and conflicts that will later define the club.