Shuri Kijino is a student at Fujimisaki Academy, established for humans partnered with Z/X beings after a peace treaty. She fights alongside Azumi Kagamihara, Ena Soranokawa, Matoi Shinonome, and Yuni Tsukigata as part of the Rank E team. Her partner Z/X is Muramasa, sharing a close combat bond.

She embraces samurai mannerisms and champions her self-proclaimed "Kijino Style" fighting philosophy, featuring archaic speech and swordsmanship focus. While genuinely skilled, she often acts impulsively on intuition rather than strategy, leading to unpredictable actions that escalate situations.

Her combat abilities are intrinsically linked to Muramasa. Using the "Boot" ability, she discards Muramasa cards from her charge area to activate synergistic effects: drawing cards, inflicting significant damage, and enabling Muramasa's abilities without cost. She also possesses the defensive trait "Absolute Boundary," rendering her immune to targeted card effects.

Personality assessments describe her as assertive, confident, and action-oriented, showing natural leadership tendencies through decisiveness, a focus on tangible results, and an inclination to take control in high-stakes situations. Her motivations stem from a strong sense of personal honor and loyalty, aligning with her samurai ethos.

When exploited by Yuni Tsukigata, who leveraged Shuri's admiration for samurai values to deceive her into a scam, the experience challenged Shuri's understanding of strength and honor. This contributed to her growth regarding trust and the complexities of genuine integrity beyond superficial ideals, reinforcing her commitment to her Rank E teammates.

Within the team, her role emphasizes frontline combat and tactical initiation of engagements. She utilizes her synergy with Muramasa to control battlefield dynamics, complementing other team members' abilities and fostering cohesion despite their initial status as the academy's lowest-ranked group.