I will preface this by saying that I don't really care about "OMG BOOBS" and all that such thing. What caught my attention to this manga was that unique premise of the disease, and what carried me through it was the amusement factor. That being said, this was mild for an ecchi, and I appreciate that the entire series wasn't about "oh, no my boobs are showing"
The first couple chapters, well, Chapter 1 specifically (which is actually the second chapter), was a rough read for me, personally. I read it months ago and dropped the series.
Until last week. I had nothing to do, thanks to some medical issues, except read manga so I picked this back up. Chapter 1 was so bad I just skipped it, and I loved the rest of the series. Just make sure you read through Chapter 2 before making a decision.
The characters aren't particularly special, but they're not bland either. The premise is unique and the author does a good job of creating outlandish situations, even if they are a bit predictable at times, that make you smile or laugh. The art is fine and the facial expressions can sometimes be glorious.
Only real complaint I have is that some of the most interesting characters were introduced at the end, and I would have liked more time with them.
All in all, a fun read, as others have said, and while some people think it ended a bit quick, I feel like it was a solid time for the end to occur. That being said, I do think they could have done a little time-skip at the end, just for a few pages, but that's a real minor nitpick. The romance may have been a bit lacking for some readers, but it was present. Considering I was looking for something light and funny to get me through a boring week, this delivered spectacularly.
Overall, I'll rate it 8/10 because it was exactly the kind of story I assumed it would be, and it delivered on that. Definitely worth reading if you're looking for a light and amusing story, even if you're like me and don't care as much for the ecchi parts.