Edogawa Conan

The protagonist of the series Detective Conan, also known as Case Closed, 16 Year Old Kudo Shinichi, witnessed a shady deal and was attacked from the back, and given an experimental drug, which was supposed to kill young Kudo, but instead, shrunk him down to the age of 6, the name "Edogawa Conan" is his new identity to hide that Shinichi Kudo is alive.