RekishiKaien
Academy City.This was a place that was developed from the undeveloped land of western Tokyo. It was one-third the size of Tokyo, and there was a tall wall surrounding it. 80% of its population of 2.3 million consisted of students. Besides being the pinnacle city of academia and the ubiquitous all-around study of science and technology, there was another side to it - the esper development institution that was achieved through artificial means and scientific processes.Targeted at the students, the "powers" developed would differ into many types according to each person's scenario. Each ability would then be sorted according to the ability's value, power, and practicality, into six different levels: People with No Powers (Level 0), People with Weak Powers (Level 1), People with Unusual Powers (Level 2), People with Strong Powers (Level 3), People with Great Powers (Level 4), and People with Super Powers (Level 5).