In the ACG world, there were many anime characters whose older sisters looked younger than their younger sisters. For example, the mother of the female lead, Ryuuma, in " The Prince of Tennis," Yoshie Toyama, looked younger than Ryuuma herself. Another example was the mother of Dangma Shangjo, Kyoko Shangjo, in the Index of Forbidden Magic Books. In addition, there were many other anime characters whose older or younger sisters looked younger than their younger sisters.