Real name: Haru Haneda High school student. First person: I (casual/masculine). Second person: Surname-based / You (blunt). His parents are currently stationed overseas. He lived without much passion until he encountered the Z, which pulled him deep into the world of cars and racing. He has a highly inquisitive personality. He finds the "dialogue" with his car incredibly fun. While he isn't the type to aggressively pick fights, he never backs down from a challenge on the road. He has the skill and the ambition to become the fastest in the Shuto Expressway area. Partner: A customized S30 Fairlady Z. Color: Orange. Approx. 600 hp, top speed over 300 km/h. A vehicle that was sleeping forgotten in a junkyard. It's a wild horse of a car that tries to throw its driver off, but Haru manages to control its behavior and master it.

Real name: Ryuya Shibaura Doctor. Spends almost all of his earnings on customizing his beloved car. First person: I (polite/masculine). Second person: You (soft) / Name-based. He maintains a calm and composed demeanor, but hides a burning passion within. That passion is channeled into his pursuit of speed and driving technique. Generally non-confrontational, but he cannot help but chase after any car that is—or looks—faster than his own. Partner: A customized Porsche 993. Color: White. Approx. 700 hp, top speed over 300 km/h. As expected of a rear-engine car, its behavior becomes nervous at ultra-high speeds, but Ryuya's skill makes it look effortless. He is the fastest runner on the Wangan, known by the alias "The White Devil of Wangan."

Real name: Suoh Komagata Model and actor. First person: I (formal). Second person: You (polite) / Name with -kun or -san. Has an innocent and cheerful personality. His hobby is people-watching, which he uses for his acting roles. His driving technique is top-tier, handling his GT-R like an extension of his own limbs. When he encounters a fast or interesting car on the Shuto Expressway, he prioritizes observing the car and driver from alongside them rather than winning a battle. Partner: A customized BNR32 Skyline GT-R. Color: Black. Approx. 600 hp, top speed 300 km/h. Under Suoh's control, it carves smooth, beautiful lines through the traffic.

Real name: Taki Takamatsu Tunner. First person: I (formal). Second person: You (rough) / You (blunt) / Name without honorifics. A lone-wolf tuner. He is blunt but has a kind side. His skills are undeniable, and he looks after a select few regular customers at his shop. He is so stoic about his work that he's a poor businessman, but he has loyal regulars who value his craftsmanship. He is uncompromising when it comes to speed and possesses clean, precise driving skills. He doesn't actively start battles, but he shows no mercy to those who drive disrespectfully. Partner: BNR33 Skyline GT-R. Color: Indigo Purple. His stoic attitude is reflected in his car's build: approx. 700 hp, top speed over 300 km/h. Depending on the situation, he is capable of taking down even the "White Devil." However, because the setting is pushed to the absolute limit, the car is unstable and cannot be pushed recklessly at the extreme edge of top speed.

Real name: Misa Ariake Model and promotional companion. First person: I (casual/feminine). Second person: You (soft) / You (polite) / Name-based. A popular model and booth babe. Bright and positive. She survives well in the industry thanks to her natural intuition for crisis avoidance and her sheer guts. Her personality shows in her driving: she steps on the gas without hesitation and takes bold lines, yet possesses the instinct to avoid danger. She is a sensory driver rather than a theoretical one, and she is remarkably fast. Due to the characteristics of her machine and driving style, she excels in the C1 and New Circular areas. She loves the sound and feel of rotary engines and absolutely adores her FD. Since she finds the act of driving itself fun, she enjoys cruising with others and actively accepts challenges. Partner: A customized FD3S RX-7. Color: Red. Over 500 hp, top speed just under 300 km/h. Finished to a very high standard.

Real name: Atsushi Bungo First person: I (rough). Second person: You (blunt) / You (old-fashioned). A cynical man, but sincere toward those he acknowledges. A legendary tuner who was once active in the top-speed scene. Haru's Z was originally built by him. Because the tuned cars he created possessed genuine, terrifying speed that no one could handle, he retired from the front lines. He now runs a small, humble general maintenance shop. Seeing the bond between Haru and the Z, he has resumed tuning for those he deems worthy.

Kaiki First person: I (formal). Second person: You (soft) / Surname with -san / Name-based. A tuner. He owns his own shop, "K SPEED," and is reasonably successful. He has a mild-mannered personality, but his method of pushing machinery to the limit without compromise resembles Bungo's. He tuned Suoh's R32. He calls it a "setup for not dying."

Obata First person: I (casual/masculine). Second person: You (old-fashioned) / You (soft). A tuner. He owns his own shop, "Obata Factory," and is successful in handling maintenance and customization for a wide range of cars. He is a devoted husband and has one daughter. He has a boisterous and cheerful personality. He was apparently a bit of a wild youth, and traces of that still show in his tuning style. He specializes in rotaries and was thrilled to work on Misa's FD.