I'm interested in some good adult manga. And by adult manga I do not mean manga with nudity. Take Terra Formars. That's a very adult manga (and anime now, I suppose), but has almost no nudity. Berserk is *very* adult with a bit of nudity, but the nudity is not a highlight by any means.
To be a bit more specific... the setting isn't too important. Sci-fi, present-day, straight up fantasy are all fine. It's just I've read a lot of shonen stuff in my day, and I'm looking to branch out to things with more mature happenings.
EDIT: Blade of the Immortal. That's another adult manga with no nudity.
Also, just for more info, I'm 27, have a wife and 2 young kids. Just kind of tired of seeing everything G and PG.