Miya, younger sister of Norito, first appears alongside her brother while scavenging for water to sustain their drought-stricken village. Her path collides with Empress in an underground research facility during the series’ sixth episode, where her timid yet wary disposition toward outsiders fractures under life-threatening pressures.

The Education Institution flags Miya as a candidate for conversion into a Hemitheos Unit—a nanomachine-augmented supersoldier. Aboard their airborne carrier, she undergoes compatibility tests that escalate into plans for full-body remodeling, a torturous process designed to overwrite her mind and body into a living weapon. Her abduction by Smiley, an Institution operative, sparks Empress’s decisive retaliation, turning Miya’s capture into a linchpin of the escalating conflict.

Decades after the Moon Flakes catastrophe and Artemis’s thwarted terraforming scheme, Miya’s survival is secured by engineer Monica Kaburagi, an ally to the Hemitheos. This rescue ensures Miya’s presence in humanity’s struggle to reclaim civilization fifty years post-collapse.

Physically, Miya is distinguished by chestnut-brown hair woven into a braid, mismatched green and gray eyes, and a petite, youthful frame. Her attire—sturdy boots, fingerless gloves, and a utility belt—mirrors the austere, survival-driven world she inhabits.

Her documented role remains confined to *Black★★Rock Shooter: DAWN FALL*, with no confirmed appearances in supplementary media.