Yuichi Tachibana runs the gas station employing Takumi Fujiwara, Itsuki Takeuchi, and Koichiro Iketani. He shares a decades-long friendship with Bunta Fujiwara, forged in their youth through shared street racing. Though passionate about racing back then, Yuichi readily acknowledges he was neither particularly skilled nor fast compared to Bunta. Despite his own unremarkable driving past, Yuichi possesses a deep understanding of racing dynamics and a sharp eye for spotting driving talent and potential in others. He mentors the younger generation, especially members of the Akina SpeedStars, acting as a father figure. He consistently supports their racing endeavors, frequently permitting them to leave work early or take time off for races and practice sessions. He drives a 1994 Toyota Camry (V40), featured throughout the story. Yuichi exhibits a supportive and understanding personality, showing genuine concern for his employees' well-being and personal lives. For instance, in *Extra Stage 2*, he encourages Iketani in his pursuit of Mako Sato and advises Kenji and Itsuki to find girlfriends. His hobbies include golf. Beyond being a workplace superior, Yuichi serves as a grounded link to the street racing world for the younger characters and a stable presence offering practical life advice alongside his driving insights. He appears in *First Stage*, *Second Stage*, *Extra Stage*, *Third Stage*, *Fourth Stage*, *Extra Stage 2*, and *Final Stage*, consistently fulfilling this supportive role within the gas station community and mountain racing scene.