Forty-nine years ago, the continent of Pros suffered an epic disaster, which people later came to call the "Great Collapse." After the Great Collapse, Pros was transformed beyond recognition, and its power structures underwent a complete reshuffle along with the disaster. Afterward, an organization called the "Order Alliance" continued to grow stronger, gradually distinguishing itself from the other groups until it became the ruler of the entire continent.
After the Great Collapse, Pros successively entered four eras: the "Post-Collapse Era," the "Reconstruction Era after the Collapse," the "Revival Era under Order," and the "Development Era under Order." The story begins in the Development Era under Order, and takes place at a newspaper called the Doll Society. Founded during the Development Era, its members have moved forward with the times, determined to make it the most influential newspaper on the continent of Pros.
