Evil Spirit of the Diving Pool - S1-E18
Other mistake: In this episode, we learn that Kindaichi can't swim. However, the series is a continuation of the first one from 1997: in a few instances (the Ghost Passenger Ship Murder Case, The Kidnapping of Reika Hayami Murder Case, with Reika appearing as a key character here) Kindaichi could swim just fine and in fact would bravely dive in the ocean to save someone and swim downstream in a mountain river when gravely injured, respectively.
Evil Spirit of the Diving Pool - S1-E18
Other mistake: Kindaichi is watching poolside the athletes on day two. He is sitting cross-legged, but his right foot is drawn wrong and the toe is twisted in an impossible position. (00:08:10)
