Koyuki Chigiri

Koyuki is a petite young woman who carries the same reddish-pink hair and deep pink eyes as her brother, a family resemblance that is hard to miss. Both Tabito Karasu and Eita Otoya remark on how cute she is. She first appears in the crowd for the U-20 against Blue Lock match, bundled in a large white scarf and a white jacket, carrying a purse, with a small ring worn on her pinky.

Bright and sweet-natured, Koyuki wears her affection openly, calling out to Hyoma and waving to him across the stands once the first half of the U-20 game ends. She is deeply caring toward her brother, the sort of sister who used to tidy his hair back when the family lived in Kagoshima and who looked after him whenever he stayed at her place during a break in the program. She has a soft spot for the holidays too, delighting in dressing up as Santa and handing Hyoma a present every year.

Koyuki is four years older than Hyoma, and the two share an easy, close bond. When he visits Tokyo, where she now lives, he tends to stay with her, and she throws her full support behind his career, turning out to cheer during the U-20 fixture. Although she is thought to hail from Kagoshima like her brother, she has since settled in the Tokyo area, which is where Hyoma was staying just before the Neo Egoist League got underway.