Shirosora Kumiko

Shirosora Kumiko is a minor character from Sky Pretty Cure and Sky Pretty Cure ~Rainbow Star~. Kumiko is Diamond's grandmother.

Family
Shirosora Diamond - Kumiko's granddaughter.

Etymology
Shirosora (白空) - Shiro (白) means white, a reference to Diamond's alter ego as Cure Whitney, and her theme color, which is white. Sora (空) means sky, which would fit the season's theme. Together, her name means "White Sky"

Kumiko (久美子) - Kumiko comes from Japanese Ku (久) "long time", Mi (美) "beautiful" and Ko (子) "child".