When do shinichi appear?

Shinichi appears in the anime and manga series "Detective Conan," also known as "Case Closed." He is the main character, a high school detective who transforms into a child after being poisoned. The series begins with his transformation and follows his adventures as he solves cases while seeking a way to regain his original body. Shinichi's character is central to the plot, featuring prominently throughout the series from the very first episode and chapter.