Shinsekai yori

Born into a world 1000 years in our future, Saki and her friends live in utopia. Not only is their idyllic community overflowing with resources, but technology is obsolete, thanks to a magical power that grants the ability to materialize anything. However, when Saki discovers a lost artifact, the facade is shattered! Faced with a startling truth about their town, Saki and her companions face dangers they never knew existed, and their choices may change the fate of everyone.