Miki

Miki (御木) is a senior in the football (soccer) club of the school that Takumi Fujiwara attended. He drives a Celica GT-Four (ST205). He serves as Takumi's last opponent in the Akina's Eight-Six arc, and as his penultimate opponent in Third Stage.

History
In First Stage, Takumi punched him in the changing rooms for bragging about his sexual exploits with Natsuki Mogi, during the time when Takumi was ignorant of the truth. It was shown in a dream sequence before Takumi woke up.

During the winter in Third Stage, he kidnaps Natsuki and forces her to come to Lake Akina with him. His plans are foiled by Takumi who gets Natsuki's call for help and chases Miki with his Trueno until he spins out on the snow after his steering wheel gets stuck and Natsuki escapes his Celica.

It is later revealed that he and Shiraishi are siblings, born from a man driving a white Mercedes, though they both don't realize it.

Trivia

 * Miki has no knowledge on cars, save for his belief that a 4WD is unbeatable on snowy roads, especially against an FR.
 * Miki is the only non-racer opponent that Takumi faced, as Miki isn't a racer and their confrontation wasn't a race.
 * Despite not being a racer, he does appear as an opponent in Arcade Stage Ver. 3, and as a playable character in Arcade Stage 8 Infinity in the RivalSide mode.
 * Between the manga and anime, Miki's Celica seems to change colors from silver to black, just like Kenta Nakamura's S14 changing to orange to red.
 * The Toyota Celica he drives is best known for being in the World Rally Championship, where it has won 1 full WRC Series and 2 overall wins in the W2L series.