"Case Closed" is a popular Japanese manga and anime series created by Gosho Aoyama. The story follows Shinichi Kudo, a high school detective who is transformed into a child after being poisoned. Adopting the alias Conan Edogawa, he continues to solve mysteries while searching for a way to regain his original body. The series features a mix of mystery, adventure, and comedy as Conan teams up with his friends and allies, including Ran Mouri and Kogoro Mouri, to solve various cases. Each episode or chapter typically presents a new crime, showcasing Conan's brilliant deductive skills.