Harada is Hiramoto's friend and also works in the Green Auto Shop who helped him tune his R32 to race with the Devil Z and the Blackbird on the Wangan. He drives a Nissan Fairlady Z31 in which its engine overheated when he encountered the Blackbird and tried to chase after it. He is then seen riding with Hiramoto during the latter's encounter with Reina and her R32 on the Wangan, and the race with the Devil Z and the Blackbird.

(Source: Wangan Midnight Wiki)