Season 1
Matchless Raijin-Oh
AirDate: 4/2/1991
Episodes: 51

Overview: The warrior of light Eldran and his robot Raijin-Oh get injured in a battle with the Jaku Empire from the 5th-dimensional world. They fall down into the 5th grade class at Hinobori School. On behalf of the damaged Eldran, the “Earth Defense Class” takes up protecting the Earth.