Kurumi Risu is a young figure skater affiliated with the Nagakute Flower FSC. She is an elementary school student in the sixth grade who has been competing since the Novice B category and later takes part in the Chubu Block Tournament. Her presence in the competitive circuit places her among the peers and rivals of the story's main skaters.

In terms of personality, Kurumi stands out as a charismatic and energetic girl. She is full of lively enthusiasm both on and off the ice. One of her most notable quirks is her fondness for plush keychains. She consistently persuades her father to buy any new keychain she discovers, which she then attaches to her backpack, turning it into a personal collection.

Her primary motivation is tied to her love for figure skating and her drive to perform well in competition. She approaches her training and events with a spirited determination, striving to advance through the ranks. While she is a supporting figure in the larger narrative, her competitive outings place her directly in the path of the protagonist, making her one of the many talented young skaters aiming for success at the regional and national levels.

Kurumi's key relationships are glimpsed through her family bond with her indulgent father and her connections within the skating community. During a training camp in Nagano, she befriended Yuna Yagi, and the two have developed a friendly rivalry and camaraderie, having faced each other at the All-Japan championships multiple times before Kurumi's appearance in later tournaments.

As a skater, her notable abilities revolve around her technical foundation built through the Novice B category and her capacity to qualify for block-level competitions. Her development traces the typical path of a serious young competitor, gradually taking on higher-level challenges. Through her appearances, she exemplifies the spirited and dedicated athletes who populate the world of competitive figure skating.