Zettai Muteki Raijin Ou

An alien empire named Jaaku attacks Earth, but Eldran pilots the mecha Raijin Oh to defend the planet. After sustaining injuries in battle, Raijin Oh crashes, and Jaaku deploys weapons called Aku Darmer globally. At Yosho Elementary School, students in the fifth grade's third class are given extra lessons. Eldran entrusts them with the Raijin Medal before vanishing, prompting the formation of an Earth Defense Agency made up of elementary students.