Ayumu Uehara, a second-year Nijigasaki High School student, begins as an unassuming girl content with an ordinary life until witnessing childhood friend Yu Takasaki and Setsuna Yuki’s idol performance ignites her curiosity. Though initially insecure about her skills, she joins the school idol club at Yu’s urging, driven by loyalty and a budding desire to explore new challenges.

Her diligence and kindness contrast with persistent shyness and self-doubt, as she questions her place among idols. Yet relentless practice earns her recognition as a "hard-working type," steadily honing her talents. Her bond with Yu, once tinged with dependency and envy, evolves as she confronts these emotions, ultimately forging her own path in idol activities while cherishing their friendship.

In *Love Live! School Idol Festival All Stars*, Ayumu’s motivation shifts from seeking external validation to finding intrinsic joy in performances. The anime parallels this growth, depicting her navigating Yu’s shifting priorities before reaffirming her independent dedication to the club. Solo songs and story arcs trace her struggles with confidence, culminating in themes of self-discovery and resilience.

Ayumu’s appearance features auburn hair styled in a bun with a braid and hairpins, olive eyes, and a slim frame. She studies fashion trends, excels at persistent gaming (notably Pokémon), and performs in the subunit A・Zu・Na with Ai Miyashita and Shizuku Osaka, represented by light pink (#ed7d95).

The OVA *Next Sky* sees her returning from London with Isla, a mentee inspired to join the idol world. While specifics of their dynamic are brief, Ayumu’s matured outlook balances personal aspirations with collaborative growth, subtly reinforcing her role in expanding the club’s reach.

Throughout her journey, Ayumu transitions from hesitant participant to self-assured idol, embodying perseverance and the pursuit of passion alongside valuing connections.