Years ago, a research facility considered artificially creating espers to weaponize psychic powers. The project was called "Project Pandora." After countless sacrifices and atrocities, the first artificial psychic, PX-01, was completed.

However, the research facility was annihilated without a trace by the test subject PX-01. Zero survivors, all data erased. After the incident, the government learned of the unethical plan's contents and treated the project as if it never existed.

Anyway, her name is Mai. She's what you'd call an esper girl. you doesn't know this, but she is the girl once called PX-01.