Miki Kanzaki is a third-year student at Sohoku High School who manages the Sohoku High Bicycle Racing Club. Her deep connection to cycling stems from her family's Kanzaki Cycle Shop, where she gained early exposure to bicycles and road racing. Though not a racer herself, she possesses extensive bicycle knowledge and a strong passion for the sport, also working as a mechanic at her family's shop.
Miki has brown eyes and long brown hair reaching her waist, usually styled with bangs. After a summer training camp, she occasionally wears a white clip adorned with a purple fish decoration. She is of average height with a slender build and a larger-than-average bust size. Her standard attire is the Sohoku High uniform: a green jacket over a white blouse, a white-and-red striped ribbon at the collar, a red-and-yellow plaid skirt, black socks, and brown loafers. During the Inter High in Hakone, she wore a pink polo shirt, a white skater skirt, and a light blue visor.
Kind, perceptive, and spirited in her enthusiasm for cycling, Miki is notably supportive, especially towards Sakamichi Onoda, advising and encouraging him during races. Discussions about bicycles transform her typically dreamy demeanor into energetic talkativeness, earning her the description of a "bike otaku." She displays a playful mischievousness, such as reminding Yusuke Makishima of his past doubts about Onoda or gently teasing Shunsuke Imaizumi and her friend Aya Tachibana. Her sharp observation extends beyond bikes; she notices team members' physical conditions, like Shingo Kinjou's withdrawal post-Inter High or Shunsuke Imaizumi favoring one leg in their second year. She remains composed under pressure, defending her team against criticism while prioritizing their well-being during critical race moments.
Her name reflects symbolic meanings: "Miki" (幹) signifies "stem" or "trunk," representing foundational strength, while "Kanzaki" combines "cold" (寒) and "blossom" (咲), suggesting a blend of resilience and delicacy.
Throughout official media, including seasons up to *Limit Break*, Miki consistently serves as the team's manager and emotional anchor. She attends races, provides mechanical support, monitors the cyclists' physical and mental states, and demonstrates unwavering dedication to Sohoku's success without competing herself.