23rd movie in the “Detective Conan” franchise. Detective Conan: The Fist of Blue Sapphire is a 2019 Japanese animated Movie. It is the twenty-third installment of the Case Closed film series based on the manga series of the same name by Gosho Aoyama, following the 2018 film Detective Conan: Zero the Enforcer. The film was released on April 12, 2019. This is the last Heisei-era Case Closed movie, released weeks before the 2019 Japanese imperial transition.