"When the 9 creators unite on the battlefield, the ultimate incident shall be stopped." These words spread across the classroom like wildfire, sparking the flames of a rebellion. For listeners Lina, her younger sister Beatrice and their friend Arthur, their lives will not be the same again. In a world of where the act of creating and destroying countries is forbidden, the creator of each country have their own bright desires, and their own twisted pasts. What is the meaning of the words shouted in the classroom? Where and how did all start and end? All the answers are in the Inside World...