In this world, a small percentage of all living beings can awaken to powers... but all humans who do are limited from using theirs. "For the sake of peaceful coexistence between espers and non-espers," The Empress said, "compromises must be made, and both must tolerate and accept each other."

"Espers or not; beneath me, all men are equal," Her Majesty declared.

The story follows a pair of young agents from the Espers Affairs Department and their newcomer trainees through various situations: fighting against threats of various levels, interacting with people from different parts of society... meanwhile going through their own personal dramas and unresolved issues.