13 years old, Daiya is the young pilot of Gaiking. As 47th member of the Daikuu Maryuu crew, he joins in order to travel to Darius and find his missing father.

Daiya is full of courage and is the crew's most powerful member. He treasures all his fellow crewmates and friends and relies on them in battle. When piloting, hair changes from black to red-orange, mimicing a flame.