Loli
Pseudo-Loli (really young and underage girls, with tiny premature boobs)
Daiakuji 0
Harumi's Bad Play
Imouto Jiru
Little Monica
Yun Yun Paradise
Loli (ur absolutely boob-free zone)
Aki's Omorashi Gokko
Daiakuji 7
Lolicon Angel
Mako-Chan
obyouki aki-chan
Oman Oparts
Tsuki kagerou
I did some research and it seems that Aki's Omorashi Gokko and obyouki aki-chan are the same thing, and the actual title is in fact "Uchiyama_Aki" http://anidb.net/perl-bin/animedb.pl?show=anime&aid=3313
All others seem to be just fine =)
Edit: Forgot to say that I've been thinking of doing a similar kind of list for a long time now, but guess you beat me to it. I hate to see those vanilla hentais without any pervy stuff. Thanks for the list and lets keep it updated!