Shinkyoku Sōkai Polyphonica (神曲奏界ポリフォニカ, Shinkyoku Sōkai Polyphonica?), also known as simply Polyphonica, is an all-age Japanese visual novel created by Ocelot and first released on the PC on April 28, 2006. Aside from the game, light novels have been created, and a manga adaptation started in March 2007. An anime adaptation started airing in Japan on April 3, 2007. The original game, Crimson series, will start its second installment, covering the third and fourth story. The Black and White Polyphonica series are planned to be adapted from a printed novel to visual novel media in spring 2007, respectively titled Shinkyoku Sōkai Polyphonica THE BLACK and Shinkyoku Sōkai Polyphonica Memories White.