Kōhei Dōjima

is a Japanese singer-songwriter. He made his major debut in 1995 and gained nationwide recognition in 1997 through his work as the theme song performer for the anime series KochiKame: Tokyo Beat Cops. Dojima has received high acclaim for his skills as a songwriter and sound producer, having provided compositions and production work for a wide array of artists, including the KinKi Kids, Fumiya Fujii, Tomohisa Yamashita, Sexy Zone, Puffy, The Collectors, Takashi Fujii, Negicco, and Angerme. Dojima developed a passion for music early on, entering the industry at age 17. He debuted as a solo singer-songwriter with his major debut single "Ore wa Doko e Iku" through Nippon Columbia in 1995 at 18,

However, his early career faced a significant setback when his agency went bankrupt at age 22. This crisis prompted introspection, leading him to reaffirm his love for music. "I realized I truly loved music when I kept writing songs to lift myself up during that tough time," Dojima later reflected. Dojima characterized the A.C.E. approach as a “new phase” in his career, focusing on minimal instrumentation, leaner arrangements, and a stronger emphasis on the singer-songwriter’s presence.