Toshiya Joushima

Joushima is a middle aged man, most likely 40 - 50 years of age, who works as a doctor/physician. In his spare time, he likes working with vehicles, most specifically cars. He is the downhill half of the two-man team Purple Shadow, along with Kouzou Hoshino. He is known as the "God Hand" for his ability to control a car with precise steering angles and throttle inputs with just one hand on the steering wheel and the other on the gear shift handle. He has an intellectual driving style similar to Ryousuke Takahashi . He derives personal satisfaction by pulling his punches. He can execute gutter jumps and can confuse his chaser by manipulating his vector.

During Takumi's battle with Joushima, Takumi felt as if he were being chased by Bunta in the Impreza. Initially Joushima toyed with Takumi, hiding his true ability, trying to instill confusion and self-doubt, confident he could dominate the battle. After Joushima finally sprang his tactical trap, Takumi recovered and retook the lead. The astonished Joushima eventually had to abandon his game, and used his ultimate time attack line to pull away. Takumi broke his suspension trying desperately to catch up, and was reduced to limping down the mountain. This would have been a loss for Takumi, except that Joushima's fatigue from multiple rounds of downhill got to him and forced him to make a vomit stop. The crippled Trueno hobbled past to a technical victory. After the race, Joushima admits that Takumi's comeback put him under so much pressure that he was forced to put his left hand back on the steering wheel, something that hadn't ever happened to him. However, Takumi did not feel that his victory was justified. Afterwards, Takumi requests a favour from Joushima, asking him to ride in his S2000 as he drives down the mountain again so that Takumi could watch Joushima's technique firsthand and hopefully improve upon his own techniques in which Joushima agreed before giving his final advice to Takumi.

(Source: Initial D Wiki)