Long ago, the Creator fashioned the world and all living things. However, the Ravens—the Creator's failed experiments—went on a rampage, slaughtering other life forms. To prevent further sacrifice, the Creator used their divine power to create a dimensional prison called the 'Gate' and sealed the Ravens away. The Creator then took in the survivors and founded the nation of 'Azmo,' where cultures from various later nations eventually blended. While the organization 'Catastrophe' was established to guard the Gate, its purpose became corrupted, turning into a tool for massacre via the Ravens. No one knows what darkness lurks within the seemingly peaceful Azmo.

Catastrophe: An organization that uses Ravens to massacre people. Almost no information is known about its members.

Guest: An ordinary citizen of Azmo who encounters Parallel while going to eat a limited-edition dessert.