Touko Kouno

Touko Kouno (河野 亨子 Kōno Tōko) is Tooru Kouno's female counterpart. Touko 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. Alongside Yuuko and Mikoto (Yuujiro and Mikoto's female counterparts), she's a Prince.

Etymology

 * The name Touko means "pass through, go smoothly" (亨) (tou) and "child" (子) (ko).
 * Touko's surname Kouno means "river, stream" (河) (kou) and "field, wilderness" (野) (no).