Futari wa Precure Splash Star 21
Well, Michiru and Kaoru ran out of other villains to do their dirty work for them, so they've got to get out there and do active villaining now. Or they could join the Cures and friends for a stargazing party. That also works.
Kaoru seems extra dismissive of the funtime antics today. Her response to pretty much everything is like, "what's the point?" or "I don't care." At a glance, you'd think she was actually getting into her villainous role and looking down on the meaningless interests of mere human scum. But I know the real reason. She's just bitter that Minori wasn't invited to the party. I can understand this. Really, what is the point in anything without Minori?
Michiru seems a little more into it, but that's pretty understandable too, because she's crazy for Saki, not Minori. Can I just say "best sisters ever x most tsundere villains ever" is, like, the official pairing of this show at this point? Also Michiru is the moon villain and this is a stargazing party. You go figure.
But eventually, the Almighty Precure Law of One Monster Per Episode gets the better of our two tsundere villains, and they kind of float up to stand in front of the moon, where Michiru summons an Uzaina from a piece of space rock. The Precure are all like "oh no you didn't" (at no-one in particular because they haven't spotted who summoned the Uzaina) and then proceed to deliver a beatdown on grounds that DUDE WE'RE NOT LETTING YOU NEAR OUR FRIENDS. THAT MEANS MICHIRU AND KAORU. MICHIRU AND KAORU ARE OUR FRIENDS. HAVE WE TUGGED AT THE VILLAINS' HEARTSTRINGS ENOUGH TODAY YET?
So Michiru and Kaoru are all like omg they're fighting for us *SWOON* before reverting to i-it's not like we don't want to kill you or anything! baka!
And then at the end of the episode Mai spots a few key details, puts two and two and two together, and is all like "ohmygod I think Michiru and Kaoru might be the bad guys o.o" Man, on their first proper mission too. These villain girls just can't catch a break, can they?