Board Thread:New on Pretty Cure Wiki/@comment-25034020-20181022151836/@comment-37117761-20181022194128

MetalLuigi64 wrote: "I just hope (s)he doesn't come out of nowhere." Sorry, Glitterinformer, only girls can be Cures. Males are likely to be allies. In the comments section of the list of HUGtto episodes, there's a link to a tweet from one of the Pretty Cure creators that says that boys can be Pretty Cures, too.

Though, TBH, I can see time travel working in a space-themed show. Thanks to general relativity, we already know that time speeds up when you're near a black hole. Perhaps one of the characters may have done that, and thus would be trapped in the present and not be able to go back to the past. Time travel can work without causing timeline issues.