Kagami Hiiragi, fraternal twin to Tsukasa Hiiragi, sports light purple hair tied into twin tails adorned with ribbons, complemented by sharp, light violet eyes. Academically driven, she excels as a top-performing student and first-year class president, contrasting with her domestic struggles in disliked tasks like cooking. Her solitary leisure pursuits include devouring light novels and dominating scrolling shooter games, hobbies seldom shared by peers.

Kagami embodies tsundere duality, blending stern responsibility with shy vulnerability. She frequently admonishes friend Konata Izumi’s otaku habits and academic apathy, yet secretly prioritizes Konata’s happiness—crafting Valentine’s chocolates solely for her or reluctantly joining a festival cheer squad after persistent prodding. Determined to remain close, Kagami pursues the humanities stream to match Konata’s path, though repeated separations fuel quiet frustration. Konata’s teasing comparisons of her twin tails to “lonely rabbit ears” poignantly reflect Kagami’s concealed isolation.

OVA narratives deepen her emotional openness. A sleep-addled murmur ambiguously hints at suppressed romantic feelings for Konata, while reluctant leadership in cheer rehearsals reveals steadfast dedication. Further moments—a flustered bath encounter, an awkward photo booth session, a dream contest fixated on Konata—highlight her growing vulnerability.

Though self-conscious about her weight, Kagami indulges a sweet tooth for pocky, a weakness Konata playfully exploits. Despite projecting confident leadership, she privately wrestles with self-doubt and belonging. Her community ties surface through shrine volunteer work, mandated by her family’s proximity. Across her arc, Kagami navigates the tension between disciplined resolve and deepening bonds, particularly with Konata, whose influence gently erodes her tsundere defenses.