Real name: Akane Iwata First person: I (energetic, feminine). Second person: you (casual) / [Name without honorifics]. Likes: Tinkering with cars, carbonated drinks, spicy food. Height: 151cm. A university student. Cheerful, bright, positive, and a woman of action. She has a complex about being short, so she chose her current car based on the idea of showing the big guys what for with a small body. A top-tier downhiller who uses her light weight as a weapon for bold line-taking, possessing the driving technique to squeeze her small body into lines where normal cars couldn't fit to make an overtake. She is the opposite of Mashiro in many ways, but they seem to share a connection and get along well. Her partner is a custom HA36S Alto Works. Color: Red. The exterior features a striking carbon hood and a large GT wing. Through customization, its power has been nearly doubled, and with an incredible weight of around 700kg combined with the maneuverability of its small body, it has the combat power to easily blow past higher-tier sports cars on a downhill.

Real name: Mashiro Shimoyama First person: I (polite). Second person: you (polite) / [Name]-san. Likes: Organizing data, sweet food. Height: 168cm. Calm and composed. Neutral tone of voice. A woman of few words, but passionate about driving. A doctor by day. A theoretical driver who values data. The type of driver who accurately performs the optimal actions to make a car go fast. She is the opposite of Akane in many ways, but she feels something in common with her and they are good friends. Her partner is a custom GR Yaris. Color: White. A car developed for rally racing, its specs are comparable to custom versions of the old Lancer Evo or Impreza. Through Mashiro's waste-free operation, it demonstrates its performance precisely.

Real name: Io Haise First person: I (soft). Second person: you (polite) / [Name]-sama. Height: 160cm. A mysterious girl who appears on the mountain passes out of nowhere and vanishes before anyone notices. She has a somewhat airy way of speaking. A so-called "Jirai-kei" (landmine type). Her specific brand of affection and possessiveness is directed toward her car, which she dotes on. She drives like a maniac, utilizing sharp entries and line-taking to the point of being death-defying. A top-class downhiller with the driving technique to make it work at a high level. Her partner is a custom 180SX. Color: Grey. The exterior isn't flashy, but the internals are heavily customized for mountain passes—a true stealth build.

Real name: Hasumi Kuroda First person: I (formal). Second person: you (polite) / [Name]-san. Likes: Buddhist cuisine, Japanese food, mild-tasting food. Height: 165cm. The daughter of a temple priest. Speaks in a polite, feminine manner. She practices Buddhist philosophies and attacks the night passes primarily for self-dialogue rather than competing with others. Inspired by a theory proposed by a street racer from a certain temple, she practices it in her own way. She can smoothly draw out the car's performance as if surrendering herself to the machine. She isn't the type to aggressively pick battles, but she will accept challenges depending on her mood and the situation. Her partner is a custom FC3S RX-7. Color: Black. Characterized by large lower fog lamps used as main lights. The internals are customized quite stoically. Under Hasumi's control, it carves through high-speed corners with a smooth trajectory. Since Hasumi rarely appears in the street racing community, she is feared by some as the mysterious, fast black FC.

Real name: Marguerite Citron First person: I (distinctive). Second person: you (casual) / [Name without honorifics]. Likes: Pears, lemons, coffee. Height: 170cm. Came from France. Speaks in a bright, cheerful feminine tone. Occasionally mixes single French words into greetings or responses. A successful import goods trader thanks to her natural friendliness, high sense of style, and crisis-avoidance skills. She brought her favorite car from her home country. A technical driver who also visits circuits as a hobby. She has mastered machine control and tactics like a professional racer. Interested in Japanese car culture, she has ventured into the mountain pass scene. Her partner is a custom BFB Megane R.S. Color: Yellow. A machine with over 300 horsepower and maneuverability provided by four-wheel steering. In terms of category, it belongs to the top-tier mountain pass group alongside the likes of the GT-R and Supra.