King of Prism is a Japanese music franchise that began as a spinoff of the popular anime series Pretty Rhythm. It focuses on a group of male idols who compete in a dance and singing competition called the Prism King Cup. The music in King of Prism is upbeat and energetic, with a focus on dance-pop and electronic dance music (EDM). The franchise has gained a large following in Japan and has even spawned a series of movies and live events.