OVA
Description
Orphaned by global earthquakes that submerged Tokyo, Aika Sumeragi was raised by salvager Gozo Aida and joined his profession, earning a C-class license at 16. Her high school attendance was frequently interrupted by salvage work. During a major teenage mission aiding classmate Eri Shinkai, she investigated Karen Minamino's tattoo, uncovering Karen's origin as a genetically engineered clone in an underwater base. Aika demonstrated martial arts and firearm skills during this mission, reacting with visible discomfort to overtly sexual situations.
By age 19, Aika continued salvaging while maintaining friendships with Eri and Karen. Investigating disappearances at St. Aero Girls' Academy revealed students under alien control via invasive probes. Aika uniquely resisted the aliens' energy-harvesting tendrils due to an unidentified alien entity within her body. This internal presence allowed her to repel attacks and incapacitate possessed students using non-lethal weapons. She wore a white shirt, blue tie, red jacket, and black microskirt during this period.
Seven years later at 26, Aika worked professionally for Gozo's corporation alongside his daughter Rion Aida. Her mission to recover the powerful Lagu artifact brought conflict with Rudolf Hagen and the Delmo Corporation army. Utilizing an experimental ultranate bustier, she transformed into "Shivie Aika"—skin darkening, hair turning blue, clothing shifting to white bra and panties. This form granted superhuman strength, metal manipulation, and limited regeneration, enabling her to destroy military vehicles and hangars.
Recurring traits include piloting expertise across aircraft, consistent preference for red-dominated outfits, and white underwear as her signature appearance. Psychologically adaptable in high-risk scenarios, she remains uncomfortable with overt sexuality despite frequent encounters. Lasting physiological modifications from her scientist parents' experiments manifested as alien energy resistance and compatibility with ultranate transformation technology.
By age 19, Aika continued salvaging while maintaining friendships with Eri and Karen. Investigating disappearances at St. Aero Girls' Academy revealed students under alien control via invasive probes. Aika uniquely resisted the aliens' energy-harvesting tendrils due to an unidentified alien entity within her body. This internal presence allowed her to repel attacks and incapacitate possessed students using non-lethal weapons. She wore a white shirt, blue tie, red jacket, and black microskirt during this period.
Seven years later at 26, Aika worked professionally for Gozo's corporation alongside his daughter Rion Aida. Her mission to recover the powerful Lagu artifact brought conflict with Rudolf Hagen and the Delmo Corporation army. Utilizing an experimental ultranate bustier, she transformed into "Shivie Aika"—skin darkening, hair turning blue, clothing shifting to white bra and panties. This form granted superhuman strength, metal manipulation, and limited regeneration, enabling her to destroy military vehicles and hangars.
Recurring traits include piloting expertise across aircraft, consistent preference for red-dominated outfits, and white underwear as her signature appearance. Psychologically adaptable in high-risk scenarios, she remains uncomfortable with overt sexuality despite frequent encounters. Lasting physiological modifications from her scientist parents' experiments manifested as alien energy resistance and compatibility with ultranate transformation technology.