Goodness gracious, the bustiness level just doubled in this series. Or more than doubled, possibly.
I'm guessing it needed to, or else the girls would be pretty square.
I have to gripes with the art style, and one probably causes the other. The characters are square/burly, and the faces are weird, like they're drawn too small for all that "face space".
I noticed it better with these girls' bust, my guess is that if they didn't have big tiddies and asses, they would have no curves at all. I dunno if it's realism (tm), but it sure took me some time to get used to the art here, especially when we have the gorgeous neighbor Angel-sama.