Eli Ayase, a third-year student and former student council president at Otonokizaka Academy, dedicates herself to preserving the school to honor her grandmother’s legacy as an alumna, shaped by her family’s international roots, including Russian ancestry. This heritage surfaces in her sporadic use of “хорошо” (harasho) and her early ballet training, inherited from her mother and grandmother. Though once a prodigy, repeated competition defeats led her to abandon ballet, adopting a guarded, pragmatic approach centered on academics and administrative duties.

Initially resistant to the formation of the school idol group μ's, Eli criticized their amateurism as a risk to the school’s reputation, prioritizing practicality over passion—a stance influenced by her own disillusionment with ballet. Yet she covertly recorded their performances, aiming to dissuade them but unintentionally amplifying their reach. This contradiction mirrored her struggle between duty and unspoken yearnings.

Her pivotal shift came when she acknowledged μ's’ potential to rescue the school, prompting her to join as choreographer, channeling her ballet expertise into their routines. She later co-led the subunit BiBi, applying strategic insight to elevate the group’s prominence. This transition symbolized her merging disciplined responsibility with reignited artistic fervor.

Stoic and commanding, Eli commands peers’ respect, yet reveals warmth in her protective relationship with younger sister Alisa. Hidden vulnerabilities—fear of darkness, aversion to haunted houses—contrast her poised facade. Occasional quirks, like nearly mistaking fake chocolate for real treats, hint at a playful, overanalytical streak.

Her meticulous craftsmanship emerges in hobbies like quilting and accessory-making. Physically distinctive with a tall frame, blonde ponytail, and piercing light-blue eyes, her slim stature underscores her elegance. Graduating from Otonokizaka, she leaves a legacy of tenacity, embodying the harmony of duty and rediscovered passion.