The plot revolves around Eiko (or, "A-ko") Magami, a red-haired teenage girl, and her best friend is Shiiko (or, "C-ko") Kotobuki, a bubbly, carefree, optimistic blonde.
The plot revolves around Eiko (or, "A-ko") Magami, a red-haired teenage girl who just happens to be stronger and faster than anyone else alive. Her best friend is Shiiko (or, "C-ko") Kotobuki, a bubbly, carefree, optimistic blonde.