Sumeragi, Aika

皇藍華

She is regarded as one of the top professionals in her field. Raised as a test subject by her scientist parents, she survived the catastrophic earthquake that killed them, protected by a bustier they had crafted. Aida Gozo subsequently took her in and raised her; Aika now works in Gozo's office as a Salvager.
Aika wears a unique battle suit constructed from 'ultranate' (more precisely, "alternate metal" based on the katakana), which forms a golden bustier. This device transforms her into a dark-skinned, blue-haired woman possessing supernatural strength and resilience. However, she dislikes the perfection achieved through this transformation and attempts to avoid relying on it. Although this form does not appear in the anime, she is referred to as Shivie Aika when in it.
She is in constant conflict with Gust, who either attempts to steal her bounty or makes advances toward her. Aika will do whatever it takes to complete a job, even if it requires compromising her morals.