Standing in a poised yet energetic stance, Yahata Umiri radiates stage-ready charisma. The premium figure captures her in a vibrant performance pose, one hand raised as if guiding a chorus, the other resting on her hip. Her long hair flows with a life-like sway, braided with ribbon accents that catch light from every angle. Her outfit blends the Ave Mujica aesthetic with concert-ready flair: a cropped jacket, asymmetric skirt, thigh-high stockings, and futuristic boots, all in a palette of electric teal, lavender, and white. Meticulous sculpting highlights ruffles, buttons, and jewelry, while the base imitates a glittering stage floor. The paintwork features subtle shading and metallic highlights to emphasize energy.

Yahata Umiri is introduced in BanG Dream! Ave Mujica as a bright, optimistic musician who turns nerves into energy on stage. Her character design emphasizes a playful yet determined spirit, with a love for catchy melodies and shimmering synths that define Ave Mujica's futuristic sound. Within the story, she pushes herself to lead moments during performances, learns to rely on her bandmates, and finds confidence through practice, jams, and late-night songwriting sessions. Umiri's arc centers on friendship, trust, and the joy of sharing music with a growing audience, transforming stage fright into a powerful, uplifting presence.