Masato learns from Ooki that he was a test tube baby who was genetically linked to Zeorymer. He is kidnapped by twin sisters Si Aen and Si Tau and interrogated by Yuratei over his role as Zeorymer's pilot. Miku quickly rescues him before the twins board their respective mecha Bryst of the Fire (火のブライスト, Hi no Buraisto) and Gallowin of the Water (水のガロウィン, Mizu no Garouin) and wreak havoc on the nearby town. The twins surround Zeorymer and fire their combined attack at it, but it suddenly teleports out of their sights. The twins' teamwork falls apart when Tau attempts to attack Zeorymer by herself, feeling that Aen has been holding her back and might use her as a shield during the battle. Masato once again changes to his Masaki persona, using the twins' quarreling to his advantage and wiping them out with a concentrated attack. (Wikipedia, 2025)
A young man named Akitsu Masato is captured by a secret govt. project known as "Last Guardian". He is told that his life as a normal student was all a lie, and that his real destiny is to be the pilot of a great robot called "Zeorymer of the Heavens". The truth of this is hammered in when Masato sees his parents accept payment for raising him. The Last Guardian is preparing for the resurrection of "Hau Dragon", an organization bent on world conquest. 15 years ago, Hau Dragon built 8 great robots. Each of the mecha represents a force of nature. However, before any of the robots could be used, their creater Kihara Masaki destroyed the robots except for the leader: Zeorymer. He took Zeorymer and an embryo to the government. The embryo became the boy Masato. Now, Hau Dragon has rebuilt the other 7 mecha and wants the 8th. It will be up to Masato and Himuro to pilot Zeorymer and fight against the Hau Dragon, but neither Masato or Himuro are all that they seem.
