Hades Project Zeorymer [OVA]

High school student Masato Akitsu led a normal life until his parents revealed that he is a genetically engineered life form. Fifteen years ago, the Hau Dragon Corporation created Misato to pilot the giant fighting robot, the Zeorymer, and take over the planet. But a mysterious double agent stole the machine and raised its infant pilot as an ordinary boy. Now the Hau Corporation has found Masato and is determined to exterminate him. Masato must take control of the monstrous robot and battle for survival, or be destroyed. His life will never be ordinary again.