Hades Project Zeorymer

Akitsu Masato, an ordinary student, is taken by a covert government project called "Last Guardian" and learns his entire life was a fabrication. His true purpose, they claim, is to pilot a powerful robot known as "Zeorymer of the Heavens." The harsh reality sinks in when Masato witnesses his parents accepting payment for raising him. The Last Guardian is bracing for the return of "Hau Dragon," a group determined to conquer the world. Fifteen years earlier, Hau Dragon constructed eight giant robots, each embodying a natural force. Before they could be deployed, their creator, Kihara Masaki, destroyed all but one-Zeorymer-and fled with it and an embryo to the government. That embryo grew into Masato. Now, Hau Dragon has rebuilt the remaining seven mecha and seeks the eighth. Masato, alongside Himuro, must pilot Zeorymer to stop them, but both hide secrets of their own.