Akiko Sakamoto

Akiko Sakamoto (坂本 晶子 Sakamoto Akiko) is Akira Sakamoto's female counterpart. Akiko only appears in a parallel universe featured as a mini comic in the manga. She also appears in the bonus footage of the anime series.

Etymology

 * The name Akiko means "clear, crystal" (晶) (aki) and "child" (子) (ko).
 * Akiko's surname Sakamoto means "slope, hill" (坂) (saka) and "base, root, origin, source" (本) (moto).