Yuzu Yosano serves as a supporting character in the anime adaptation, introduced as a classmate of protagonists Azuki Masaoka and Matcha Kobayashi during the second episode. Her name and visual design draw direct inspiration from citrus fruits.

She embodies a nurturing "big sister" archetype, consistently displaying kindness, care, and a warm smile. Contrasting this demeanor, she frequently neglects cleaning responsibilities while cultivating an intense fascination for romantic fantasies between Azuki and Matcha. Her imagination vividly conjures scenarios of their proximity, particularly noticeable during bathhouse interactions.

Her contributions focus on motivating the group's artistic pursuits. She initiates the proposal to share their dance performances online, expanding their audience and catalyzing the development of fan-generated songs.