S04E05: Fujiwara Zone

As the battle heats up, both Takumi and Kai both use all of their ability, and then some, to battle for the win. In the next battle, Keisuke puts his new accelerator techniques to the test against Minagawa's Supra. But as Ryosuke explains, there is another purpose of this training that would allow him to beat the "super-orthodox" pro racer.