TV-Series
Description
Kouji Hoshiyama is a fifth-grade student at Hinobori Academy and a vital member of the school's Earth Defense Class, the group of children entrusted with protecting the planet from an otherworldly threat. His attendance number is nine, his birth date is October 30, his blood type is B, and he stands approximately 121.6 centimeters tall. He has a gentle and kind-hearted disposition, often coming across as a little timid and naive when compared with his more assertive classmates. Despite that quiet demeanor, he consistently finds the resolve to act courageously in moments of crisis, and his innate tenderness remains intact as he faces danger.

As a core pilot, Kouji operates Jyu-oh, the powerful lion-type mecha that serves as one of the three components forming the giant robot Raijin-Oh. During combined operations he is additionally responsible for power regulation and the management of all weapon systems for both Raijin-Oh and its upgraded form God Raijin-Oh, making him indispensable to the team's combat effectiveness. His battle style leverages Jyu-oh's brute strength along with attacks such as the Anchor Horn, the Animal Attack, and the Flame Lance.

Kouji's interests set him apart within the group. He is an avid believer in UFOs, aliens, and the occult, and he often carries binoculars for sky watching. His fascination with the unknown extends to creative outlets; he is notably skilled at writing and penning stage scripts, and he participates in the school's astronomy observation club. This dreamy quality adds a layer of imagination to his personality and occasionally inspires his contributions to the team.

The boy's relationships with his fellow pilots, Jin Hyuga and Asuka Tsukishiro, are central to his story. Where Jin is brash and energetic and Asuka tends toward pride and self-importance, Kouji offers a softer, more sincere presence that helps balance the trio. He also works closely with the entire Earth Defense Class, including commander Maria Shiratori and the support operators, all of whom rely on his steady development from an easily startled child into a braver, more determined defender. Over time, the challenges he faces compel him to draw out a quiet perseverance that complements his natural innocence, allowing him to fulfill his duty without losing the gentle curiosity that defines him.