A member of Hinobori Gakuen&#039;s 5-3 &quot;Chikyuu Bouei Gumi&quot;. His ninth attendance number.  Koji is a main pilot of Jyu-Oh and is in charge of power control and weapon operation of Raijin-Oh, God Raijin-Oh.  He is kind, and a little timid, however, he shows courage. He believes an UFO and occult.

Suddenly, an evil empire, Jaaku, raids the Earth. But the light appears from the Earth, and fights against Jaaku. It is Raijin Oh operated by Eldran. Eldran has protected the earth since the ancient ages. But he was injured during the fight, and Raijin Oh falls to the ground. On the other hand, Jaaku scatters their weapons, Aku Darmer, all over the world. <br>
Meanwhile, in Yosho elementary school, they have extra lessons in the 3rd class of the 5th grade. Eldran leaves Raijin Medal to them and asks them to save the Earth for him, and then he disappeared. In this way, the Earth Defense Agency consisted of elementary students is founded.<br><br>
(Source: AnimeNfo)

Maruta Mari's parents both work in theatre: her father is a stage designer and her mother is an actress. Mari has been interested in paintings and manga since early childhood. She studied at a junior college of art, where she was also a member of the local manga research club.

Apart from voice acting work, Mari is active as a jazz singer and is currently a member of the unit Wild Strawberry together with Inoue Kikuko, who is also a seiyuu, and the pianist Ogasawara Junko. In June 2013, she married a person she's been dating for 10 years.

Kouji Hoshiyama