The Utopias

Living in the real world doesn't seem like the greatest idea, especially when most of the planet was ruined by years and years of war and destruction, up to the point where it doesn't seem inhabitable anymore.
Then "The Utopias" were created. Systems that were invented to take people to their own world where they could be free and create whatever they wanted. That was the case for Jeongguk; a teenager that ownedan Utopia ever since he remembered, and from a young age he started to build his small world, little by little. Everything is fine for a couple more days, until a huge glitch is found in the system.