User blog comment:XCandyBeatX/Doki Doki Precure Discussions/@comment-4831674-20130205184428

Well, it has also similarities to Heartcatch;

-Both have 4 Pretty Cures with same Theme Colors and same appearing "order"

-Both seasons show the purple Cure fighting in other dimension before the "story" starts

-Both show the Purple Cure first and her identity last

-The yellow/orange Cures have the same hairstyle