परिचय: "Every human on the planet was turned into stone after a mysterious flash of light. This manga tells the story of how some people from the Pre-Petrification World try to rebuild civilization the Petrification Age, the Stone World. One of the main characters' first creations undoes the petrification and is called the stone formula. From the Stone Age to modern civilization, we must catch up with the 2 million years gap in the history of science! Unheard of creation adventure, here we go!