Hiroya Okuyama is the number 1 driver of Team Spiral, also known as "Zero 1". Okuyama too believes in Ikeda's "Zero Theory" and is disappointed when he won't be able to use his car's full potential due to the fog. Okuyama, unlike Ikeda is very arrogant and confident in his abilities. He also refuses to greet Project D upon meeting them. (Source: Wikipedia)
