Koizumi Nanami

Koizumi Nanami is a minor character of the Sky Pretty Cure Series. She is one of Robin's best friends. She had many minor appearances in Sky Pretty Cure and had an important role in Sky Pretty Cure ~Rainbow Star~.

In Rainbow Star 09, Nanami makes her own Pretty Cure outfit and calls herself Cure Ciel (キュアシエル), the Pretty Cure of stardust and stars.

Friends

 * Akahane Robin & Ichina Umeko - Nanami's best friends.

Etymology
Koizumi (恋泉) - Koi (恋) means "love". Izumi (泉) means "spring" or "fountain".

Nanami (ナナミ) - Nanami comes from Japanese Nana (七) "seven" and Mi (海) "sea". It can also come from Na (菜) "vegetables, greens" duplicated and Mi (美) "beautiful".

Cure Ciel - Nanami's "alter ego" of the nijiiro cosplay day. Ciel means "sky" in French.