There are probably more manga coming out these days that show all than ever before, actually. Japan's censorship seems to be getting looser and looser as time goes on.
Gantz is an easy example. Everything about the series is extremely frank, including the nudity. Actually a number of series that run in adult magazines like Young Jump are like this.
Bakekano is sort of a shounen series and does this very blatantly. Only one chapter's been translated, but it should give you a perfect idea of what to expect and my group wants to do the rest some day. It's actually not half bad.
Evilive is censored sometimes, but other times shows everything. The volumes show more than the magazine serializaion, but I don't know if they were ever scanned.
Shin Mazinger Zero showed a lot, but it was in only one chapter I think. Overall it's not actually a very ecchi kind of series though.
Konohana (also untranslated, but there are raws out there) does this to some degree as well, though certain chapters do have censor bars. Still, much of it shows everything without any kind of censorship. The problem? The series ran into some legal trouble, which forced the author to tone things down, which also killed his enthusiasm, so it's only had one volume and hasn't been running for at least half a year.
The original serialization of
Triage X did this to some degree, but it's only happened I think twice within the series, and it was edited out of the volumes, so it's kind of questionable whether there'll be more of this kind of thing. My group is doing this series and re-edited the censored parts back in using the magazine raws, so the scanlation has these parts intact.
Then of course there are a lot of series that tease with quick partial flashes of full nudity but never show it all clearly, like
Platonic Invade,
Mayoi Neko Overrun!,
To Love-ru (volume versions) and its sequel,
Mizuiro Splash, and even the color chapter of
Omamori Himari that was included in volume 0 (but not anywhere else in the series).
I tend to notice this kind of thing. Don't ask.
