B ZONE Incorporated, formerly known as Being Incorporated, is a Japanese private entertainment conglomerate and recording label based in Tokyo's Roppongi district, founded on November 1, 1978 by music producer Daiko Nagato. The company and its subsidiaries are the main supplier of theme music for the anime series Detective Conan. As of May 2023, over 130 theme songs have been supplied to the anime television series and movies by the B ZONE Group. On 4 April 2023, Being changed company name to B Zone.

Case Closed, also known as Detective Conan , is a Japanese detective manga series written and illustrated by Gosho Aoyama. It has been serialized in Shogakukan's shōnen manga magazine Weekly Shōnen Sunday since January 1994, with its chapters collected in 105 tankōbon volumes as of April 2024. Due to legal problems with the name Detective Conan, the English language releases from Funimation and Viz Media were renamed to Case Closed. The story follows the high school detective Shinichi Kudo, whose body was transformed into that of an elementary school-age child while investigating a mysterious organization. Generally, he solves a multitude of cases by impersonating his childhood best friend's father and various other characters.