Miyuki Ichinose is a core member of a motorcycle racing group and the daughter of the Ichinose Racing Team president, embedding her in a motorsport family. This environment cultivated her deep technical motorcycle knowledge and active racing participation. She possesses significant mechanical aptitude, showcasing a passion for vehicle work and engineering understanding, driven by the ambition to become a professional racer and win championships.

Her personality blends a tomboyish demeanor with confidence and assertiveness. She balances this with genuine care for her friends, displaying protective instincts and a willingness to face danger for them, alongside a playful tendency to tease close acquaintances. Romantically, she harbors feelings for fellow racer Hiro Okita; their dynamic features frequent bickering coexisting with mutual respect for each other's riding skills and underlying trust.

Within the narrative, Miyuki acts as a catalyst for key events. Witnessing Gun Koma's unexpected potential, she facilitates his entry onto the Ichinose Racing Team. Later, she organizes the team's participation in the Suzuka 4-hour endurance race, strategically pairing riders—Gun with Hideyoshi Hijiri, and herself with Hiro—despite rivalries, demonstrating leadership and racing dynamics acumen. She endures a significant ordeal when abducted by a former rival, facing a near-assault situation requiring rescue by Hiro and Gun, revealing vulnerabilities beneath her resilience.

As an active competitor, Miyuki races using a Honda VT250F. Her involvement extends beyond riding; during major events like the Suzuka race, she contributes as part of the pit crew, exemplifying her team-oriented approach to motorsport.