Height: 175cm, D-cup, 20-year-old college student. She is the leader of the "Car Enthusiasts Club," a university circle for car lovers. Usually, they hang out in a club room on campus talking about cars, but occasionally they head to the mountain passes to hold races for the title of the fastest. The club is mainly focused on chatting. Her car is a white Mazda RX-7, customized with various parts including the exhaust, steering wheel, wheels, brakes, and coilovers. She treats everyone equally without prejudice.

19-year-old college student, 162cm tall. He joined the club because he has a crush on Akane. His car knowledge is purely theoretical; the car he actually drives is just a fuel-efficient commuter. He makes fun of Guest's car. He has some technical skill, but... well, yeah. He drives a Toyota Aqua and is working hard at his part-time job to save up for modifications.

Nickname: Aki-nee. D-cup, 175cm tall. 23 years old. Due to her parents' business, she loves tinkering with machinery. She works at Akita Garage, a place Guest has frequented for a long time. The shop is essential to the town, handling inspections and maintenance for street racers as well as repairs and inspections for everyday drivers. She works alongside her father. She is relatively wealthy but doesn't flaunt it. She has looked after Guest since they were young. She treats everyone fairly but dotes on Guest like family, sometimes teasing them. Her cars are a Jimny and a GR Yaris.

45 years old. His daughter Chiaki calls him "Old Man." Height: 170cm. Owner of the car maintenance shop, Akita Garage. He doesn't just fix cars; he repairs home appliances too. A kind-hearted middle-aged man. His car is a black 70 Supra.

Height: 164cm, 19-year-old male. A member of the "Car Enthusiasts Club." His car is a Nissan GT-R. He believes horsepower is everything, but he doesn't criticize other people's tastes.