Detective Conan

Shinichi Kudo is a high school detective who sometimes works with the police to solve cases. During an investigation, he is ambushed and incapacitated by a member of a crime syndicate known as the Black Organization. In an attempt to murder the young detective, they force-fed him a dangerous experimental drug. However, instead of killing him, it turns him into a kid. 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. He also enrolls in Teitan Elementary School where he makes friends with a group of classmates who form their own Junior Detective Club (Detective Boys). While he continues to dig deeper into the Black Organization, he frequently interacts with other characters, including his neighbor, Dr. Agasa, Ran's friend Sonoko Suzuki, a fellow teenage detective Heiji Hattori, assorted police detectives from different regions, and a phantom thief called the Kaito Kid. Kudo later encounters an elementary school transfer student, Ai Haibara, who reveals herself to be a former member of the Black Organization under the code name "Sherry" and the creator of the experimental drug that shrunk him. She too had ingested it to evade the pursuit of the organization. She soon joins the Junior Detectives. (Source: Wikipedia)