Shutaura Sequenzia commands the Black Crow Unit as a Level 4 esper, serving Academy City’s executive Ladylee Tangleroad. Her Earth Palette ability manipulates rare earth elements stored in disc-shaped cartridges, detonated via conductive wires or touch. Activation triggers a glow in her eyes. Three years before the main timeline, she survived the Spaceplane Orion crash—publicly celebrated as "Miracle 88" for its 88 survivors—while her pilot father, Daedalus Sequenzia, perished in the incident. Her desperate plea to save passengers during the crash fractured her Orion bracelet and split her consciousness, birthing Meigo Arisa, a saint-like entity wielding magical song. The trauma left Shutaura unable to process music and embittered toward the concept of miracles, which she views as hollow despite public adulation.

Tasked with protecting Arisa, Shutaura operates with cold efficiency, prioritizing mission objectives over personal safety. Her loyalty to Academy City earns her team’s respect, but rage erupts when she uncovers Ladylee’s orchestration of the Orion disaster to harness Arisa’s powers. A failed revenge attempt against the immortal executive forces her to confront futility.

Interactions with Touma Kamijou challenge her nihilism. He reframes the Orion’s survival as her father’s deliberate sacrifice, not random chance, arguing that human agency forged the "miracle." This perspective, paired with recovered memories of Daedalus’s final actions, softens her resolve. During Endymion’s collapse, she merges with Arisa, amplifying the latter’s song to neutralize the crisis. Their fusion repairs the split bracelet and restores Shutaura’s capacity to hear music, mending her fractured psyche.

Though no longer openly hostile to miracles, she asserts their dependence on human will. Post-merger, subtle traces of Arisa’s歌声 linger, implying their coexistence persists—a quiet union of pragmatism and hope.