Chika Kirishima, a second-year at Urawa Hosei High School, anchors the girls' soccer team as a key midfielder. She competes with black hair tied up, grey eyes focused, and distinctive protective goggles in place. Her kit features red and black colors alongside light blue cleats. On the field, Chika exudes confidence and fierce competitiveness, boldly declaring her team Japan's best. Her approach is strict and direct, sometimes appearing distant or cold, particularly towards former teammates. Yet beneath this exterior lies genuine concern, shown when she kindly assists an opponent she knocked down. This care shines strongest for Midori Soshizaki, whom she mentors with almost sisterly devotion.

Their bond formed at Toda Kita Junior High, where they played as a double volante partnership. Chika frequently guided Midori there. After graduation, Chika invited Midori to Urawa Hosei, but Midori chose Warabi Seinan High School instead. This decision deeply disappointed Chika, who believed Midori's presence could have secured victory against Kunogi Academy in the Kanto Preliminaries. That crucial match echoed a pivotal loss from the previous year, where Chika's mistake allowed Kunogi Academy to score the winning goal. This defeat ended her senior teammates' careers, devastating Chika and fueling an intense sense of responsibility. It drove her relentless dedication, resulting in her team maintaining a clean sheet in all official matches since.

Chika excels across the entire field, combining notable mobility with proficiency in both attack and defense. She specializes in rigorous man-to-man marking and powerful sliding tackles, utilizing exceptional recovery speed to reclaim possession even when bypassed. Her ability to ignite swift counter-attacks makes her the cornerstone of Urawa Hosei's catenaccio strategy. Her relationship with Midori evolves through encounters: questioning Midori's choice during a practice match, confronting her after an inter-high qualifier, and asserting that talents like Midori, Nozomi Onda, and Sumire Suō belong on stronger teams for women's soccer's advancement. Witnessing Midori passionately discuss her dreams the next day finally allows Chika to release her lingering resentment. She silently acknowledges Midori's growth, reaffirming her enduring care.

Within her own team, Chika relies on Kei Hanabusa for strategy while tolerating teammate Alice Adatara's eccentric interests. She holds a lasting grudge against Mizuki Kaji from Kunogi Academy for stealing the ball during their fateful match. Edgar Davids inspires her appearance, while N'Golo Kanté influences her playstyle.