Kawagoe Boys Sing -Now or Never- (川越ボーイズ・シング) is an original Japanese anime television series produced by NBCUniversal Entertainment Japan and animated by evg, in cooperation with Telecom Animation Film. It is directed by Atsushi Matsumoto, written by the Kawagoe School Literary Club, with Yuki Kanesaka, Shin Rizumu, and Junko Yokoyama composing the music. Original character designs are provided by Ebimo, while Haru Watanabe adapts the designs for animation. Hiromi Kikuta is directing the sound at dugout.[1] The series aired from October 9, 2023, to January 15, 2024, on Tokyo MX and BS11.[2] The opening theme song was performed by Kaco.[3] Crunchyroll streamed the series.[4]