Total Recommendations: 1
Both represent a dystopia genre. There are two societies within each anime with strict rules which every citizen should obey. But they weren't here from the beginning, they occures as a result of some sort a disaster. The information about those disasters and the worlds' structures themselves is strictly classified, and main characters, who knows nothing at the beginning, step by step reveal all the truth. Both general story lines begin when member of one society get in contact with member of another, which is primarily a taboo, even though in Shinsekai Yori one society dominates on another. Both stories are developing as those societies come into a conflict. And both final plot twists are rather similar too. I bet if you enjoyed one show you will enjoy the other as much!