I've been reading a lot of the erotic Korean manhwas. My favorites are probably Brawling Go, Love Parameter, and Sweet Guy. Kill the Dead Bastard is another one that looks really promising.
webcomic manga hmm... for now it' Gekkan Shoujo Nozoki-kun and One Punch Man (the original one)
It's a shame Gekkan Shoujo anime haven't get a sequel, even though the story is good.