Aikawa Rumi

Rumi's primary intention of joining the Regular Army is because of her mother diagnosed with a heart condition as well as her older sister, Madoka, who was physically weak, so that both of them can make use of the Regular Army's medical facilities for treatment. During her training, she was accidentally shipped to the frontlines after a paperwork fiasco and, despite the fact that her training was not yet completed, she manages to escape fighting unscathed and without capture. After the first conflict with the Rebellion, Rumi is given a chance to resign from her position, and carry out the rest of her life as a civilian. She declines the offer and transfers into the Regular Army's Intelligence Division. As a supply sergeant, she packs an incredible amount of cargo into her backpack and tries to deliver them to the friendly forces, out in the battlefield, in hopes to help them win. However she has a horrible sense of direction, and often gets lost. This results in her appearing out of nowhere, and vanishing without a trace, gaining her the nickname "The Wandering Ghost" by other soldiers.