Indigo Noukon

Indi is the Indigo Rainbow Princess, Ryo's younger sister, and Rukasu's cousin.

Trivia

 * Indi wasn't originally meant to be Ryo's sister. When IchokaSuzumi666 realized there should be an Indigo Rainbow Princess, the last name she picked for her just happened to be the same as Ryo's. Instead of changing it, she decided to improvise by making them siblings.
 * In accordance of this, Indi's last name was also changed to Kishio when the creator decided to change Ryo's last name to such. Their last name was later changed again to Noukon.