Junki Saiga's father went missing years ago, and Junki has been living a normal life since -- until his father's remains were found in some ruins. Upon investigating, Junki inadvertently discovers a golden bracelet; and coincidentally, a large extraterrestrial being simultaneously crashes nearby and begins attacking everything in sight! Much to Junki's surprise, a golden mechanical giant named Reideen then appears and battles the alien with Junki as its pilot. After the battle is over Junki realizes that he was chosen to be the pilot of Reideen, and that he is the only one who can stop the aliens! Now, he must continue to live his life as a regular high school student, in addition to piloting Reideen when new threats emerge!
Gonzo does it again with this action-packed mecha comedy. She's an ordinary high school girl. He's a counterterror agent assigned to protect her from those who would steal the information locked in her mind. OK, so she's not so normal after all. Armored Slave battles and lovers' spats abound as Sousuke and his comrades try to track down the mysterious Gauln before it's too late.
Sogoru Kyo is a normal high school student with great passion for the things he holds dear. In fact, his love for swimming is so great he is attempting to single-handedly keep the team alive. However, his life takes an unexpected twist when meets a strange girl at the pool whose existence shows him an enemy force that is threatening the very existence of humanity. These beings known as GARDS-OMS seek to eliminate humanity and take Earth for their own. His choice is to live as he has been, or take a place in the cockpit of a mecha to stop the extinction of humanity. They often say the truth will set you free, but in this case the truth may destroy Kyo and leave his beloved hometown without the hero it so desperately needs.