A career soldier, Aiko went directly into the military academy as soon as she came of age. A solid student and Commander, Aiko graduated as a lieutenant and spent several years in the field, earning several commendations for bravery. After being critically injured during a Cybran raid, Aiko was removed from frontline command. Unwilling to accept her new position, she repeatedly volunteered for active duty and was eventually selected as Head-of-Security for a top-secret UEF installation on Earth.