About females being able to say if someone is looking at their boobs: Females see things differnet from males. Males have far sight while females have wide sight. That difference makes that females can see more "social cues" than men as they can see more at close range and they "train" that hability through their life. So yes, they can see that you were looking even when you are in their "blind spot", because they can actually see you looking even if subconciously.
Very blessed to see a new chapter release. And trying to read too much out of the "Well, I did some things" panel, I'd say that they're taking herbal supplements, the I-can't-believe-it's-not-HRT stuff that seems more popular in Japan, coupled with more of that targeted weight loss from previous chapters.
At any rate, it's nice to see all of them joke around and being happy dorks. Good stuff, need more