Detective Conan the Series Season 1

Shinichi Kudo is a high school detective who sometimes works with the police to solve cases. During an investigation, he is attacked by members of a crime syndicate known as the Black Organization. They force him to ingest an experimental poison, but instead of killing him, the poison transforms him into a child. Adopting the pseudonym Conan Edogawa and keeping his true identity a secret, Kudo lives with his childhood friend Ran Mori and her father Kogoro Mori, who is a private detective. Throughout the series, he tags along on Kogoro's cases, but when he is able to solve one, he uses a tranquilizer needle to put Kogoro to sleep, and impersonates his voice using a voice changer to reveal the solution to the case. He also enrolls in a local elementary school where he makes friends with a group of classmates who form their own Junior Detective club . While he continues to dig deeper into the Black Organization.