A longtime associate of Jun and nearly as fervent in the pursuit of speed. A CPU tuning specialist, he got the nickname "The Jet" from his racing days and his CPU settings were often called "Jetting." Tuned the Monstrous Toyota Supra RZ along with Akio Asakura, mainly providing the lightening carbon parts. Before he established his "Tominaga Speed" tuning shop, he was once a tuner working for ZERO with Kijima and Machida.