Keiko Mizutani

Keiko Mizutani (水谷 恵子, Mizutani Keiko) is part of the Adult Tomodachi Games. She appears in the first game, "Prison Game of Friendship", as "Prisoner Number 009".

Etymology

 * The name Keiko means "favor, benefit" (恵) (kei) and "child" (子) (ko).
 * Keiko's surname Mizutani means "water" (水) (mizu) and "valley" (谷) (tani).