Story is weak, although it features some core human things that some media makers have forgotten. In other words, despite it being ecchi, it's not a loathsome abomination like "Big Mouth" et al. The chicks are into the guy. The guy is into the chicks. The chicks are pretty hot. There's fighting. Not always extremely smoothly animated, but, it's at least laid out and visualized in an appealing way. The opening has a nice tune, the ending, too. The concept art book is great (although that is of course a side thing). All in all, quite good anime, for visuals. Very appealing designs. And I don't just meanthat they're revealing, but the proportions and shape language is very appealing.
(This would be true even at smaller bust and ass sizes)

Certainly not a show with runts in it.
Turn off your brain, sit back, and enjoy something nice. Cause ironically, it's not even that gratuitous. It's very blatant, but not excessively gratuitous.

It's like sitting on a bench and a buxom, yet svelte yoga chick stands nearby. Not much left to the imagination, it's blatant.
But it's not 'pig tier raunchy'. That chick would look sexy doing most things, all with passive physicality.

It's good, for what it is, and that's why I'm giving it a seven, but only on its own, with minimal comparisons to other works.