Momoka, who has had some success with her voice-acting, is stuggling with capturing the voice and character of a little kid, so the Sket-dan invites her to join them in a series of childlike activities to recall how it feels to be young again. Later, Himeko and Momoka injest a mysterious cola that shrinks them into three-year-olds. Council members Kikuno and Unyuu also drink the cola and transform. It’s up to Bossun and Tsubaki to watch them until Chuuma makes the anecdote.
Apparently the writers couldn’t resist another Muppet Babies episode, only this time involving all the girls. Like the episode where Bossun shrunk, there’s a very nice texture and palette and smoothness to the animation. This episode distinguishes itself with much more action, including the girls chasing a cat, and Bossun chasing a truck on a bike (this seems to be a recurring thing in anime).
I am not a fan of chibi-style anime, which is basically how the three-year-olds are drawn here, but still enjoyed the episode. Besides the quality animation, there were plenty of funny moments – Himeko pretending to be a sumo wrestler, then hilariously trying to reach her hockey stick, for example. Or the return of the mustachioed PapaSwitch(TM). And the twist at the end where the antedote nets the girls the bodies of 27-year-old women, overshooting the mark. And of course, the fact that all of this kidding around was for naught: Momoka has to voice an infant.