Board Thread:New on Pretty Cure Wiki/@comment-31550511-20181212231126/@comment-5469588-20181213224532

According to the Livejournal, the yellow Cure may be Brazilian and the names are rumored to be:

Hikaru/Cure Star (pink) Lala/Cure Milky (teal/whatever color she is) Elena/Cure Soleil (yellow) Madoka/Cure Serene (purple)

It's not 100% true as of yet, though. It's just a rumor.