Um, being the uploader, I have to say this. There should be a seiyuu connection for their seiyuus who have worked in Go! Princess Precure: Asano Masumi (Calvina) did Kaidou Minami/Cure Mermaid, and Calvina is wearing Cure Mermaid's outfit. Touyama Nao (Festenia) did Puff who has a human form of a maid, and she's wearing the same maid outfit AND headband. The origin source also noted the seiyuu connection with Precure.