I shall be nothing, the wind, the sky.

Le vent se lève! . . . Il faut tenter de vivre!

Your life is EVERYTHING! You serve ALL PURPOSE! You should treat yourself NOW... and give yourself a piece of that oxygen in the ozone layer, that's covered up so that you can breathe in this blue-trapped bubble! Cause you know I'm here for: to worship YOU! Love YOURSELF! I mean that with a hundred percent! With a thousand percent!

Although it is very much focused on secondary sex characteristics, it is not pornographic. Yes, there's a perverted lesbian, but that's one character among many. The story as whole does not belittle the women doing Keijo for entering a sport using boobs and butts. It's also not a show like e.g. Seikon no Qwaser, where the ecchi scenes of dubious consent make you increasingly uncomfortable. Instead, Keijo could genuinely be called a celebration of positive female sexuality (or at least, an attempt thereof. You might of course disagree on the results): The athletes all use their assets in ways they determine to fit them, each developing unique techniques that are theirs, reaffirming that they are all their own person. The athletes also defy a single mold, more flat-breasted athletes like Sayaka, buff women and BBWs like Ujibe-sensei and Tae are all shown to have a legitimate place in the Keijo world just as much as the more conventionally attractive athletes.

Keijo has an undoubtedly ridiculous concept, but it makes it work because it absolutely relishes in its absurdity, while at the same time being a legitimate sports anime that does all the sports anime things: training arcs, motivational monologues, affirmations of camaraderie, that kinda thing. But beyond that, most of the series is spent on a variety of Keijo battles that get increasingly more ridiculous as the show goes on, showing off the incredible creativity in powers you'd normally see in shonen shows. Soon, you're less weirded out, and more excited what ludircrous techniques the women in this show are able to, ahem, pull out of their asses. In addition to the ones mentioned in the synopsis, some examples include the Butt Guillotine, the Meteor Hip, the Fairy Butt, the 1.6kg Boob Napalm and, of course, Buttack on Titan. Reading this list, you might be Sayaka's father right now, but simply listing their names does no justice to seeing them in action.

"If the trap is gay, then why are we attracted to his soft features, his girlish composition and feminine appearance? He is nothing more than the ideal slave girl, chaste and willing, with an extra bulge in his nethers. I don't expect philistines like you to comprehend."
- Socrates, in response to Thrasymachus accusations of pederasty.