Haibara Ai looks like a child, but she used to be a member of the Black Organization. She is the developer of the drug (APTX4869) that Shinichi Kudo was given, and she is currently researching an antidote.

Detective Conan

After solving a certain case, high school detective Shinichi Kudo witnesses a dubious transaction by men dressed in black. In order to keep his mouth shut, he was forced to drink a mysterious poison, leaving him in the body of a 1st year student… The mystery manga “Detective Conan” spun by Gosho Aoyama, which started serialization in “Weekly Shonen Sunday” in 1994, is now a very popular work with over 100 volumes. An original design that can only be obtained at UNIQLO, using a scene from the original work coveted by fans and art from TV animation.

©Gosho Aoyama/Shogakukan/Yomiuri TV/TMS 1996