Mari Asaka stands as the central protagonist, a high school student navigating a society where humans and beastfolk coexist amidst significant prejudice. Her initial apprehension surfaces when Tsunagu Hidaka, a beastfolk student, transfers into her class, a reaction fueled by societal norms and misconceptions. Mari's personal history involves typical adolescent experiences within school, though details about her family or earlier life remain undefined.

Her character development unfolds directly through evolving interactions with Tsunagu. Witnessing his gentle and steadfast nature firsthand challenges her preconceptions. This dynamic sparks a shift in perspective, forging a deepening bond that actively confronts societal biases. This relationship forms the core of her journey, tracing a path from wariness to genuine connection. Mari adapts, showing growing empathy and a willingness to reassess ingrained beliefs, signaling internal growth. This connection inevitably brings her into conflict with broader societal structures, positioning her as an agent of change.

Physically, Mari is 156 cm tall with a birthday on April 30. Her relationships extend beyond Tsunagu to include Yukihiro Aida and Kisara, though the nature and depth of these connections lack explicit elaboration. The narrative framework centers on interpersonal challenges and societal barriers driving her trajectory.