I would be lying if I said I had a problem with panty scenes
But I must admit, this series while a fun series, seems to have gone a little out of it's way to have girls that never seem to want to put on a dress or a skirt or shorts or pants. I mean, it's funny seeing the girls in shirt, tie, sweater or jacket and undies not even remotely covered.
Not that it's showing anything you wouldn't see at the beach, because panties are really just bikini swimsuit bottoms when you think about it. It's just the idea that you are not "supposed" to see a girls underwear normally. And yet they all walk around like wearing anything other than panties below the waist would be odd.
Interesting world. And I find all the modified nation names all amusing too.
The Japanese sure are good at cosmetically fudging details like that