 The Black and White "Polyphonica" series were 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".In the continent of Polyphonica, spirits materialize in the world, surviving on the music that is played by humans, and live together with them.While the spirits do not appear often, some spirits have enough power to materialize in human or animal forms.