NipponSex once was a sub label of Nipponsei. They released rips of (mostly) Japanese H-Game soundtracks.
The project is long gone now and unfortunately so are their torrents.
I was able to find a bunch of their releases via other sources but some keep avoiding me to this day.
Here are the ones I wasn't able to find:

- Furufuru FullMoon Original Soundtrack -FuruFull- (wasn't able to find this on vgmdb.net)
- Colorful Sound Collection (GIGA-080233~5 | Colorful Sound Collection - VGMdb (http://vgmdb.net/album/8208))
- Gouen no Soleil -Chaos Region - Original Soundtrack (SF-009 | Gouen no Soleil -Chaos Region- Original Soundtrack - VGMdb (http://vgmdb.net/album/8257))
- Hyouka no Genya -Eternal Waltz- Soundtrack Snow Melody (GIGA-071222~3 | Hyouka no Genya -Eternal Waltz- Sound Track ~Snow Melody~ - VGMdb (http://vgmdb.net/album/8217))
- lightBox2008 Music Collection (GRWOC65 | lightBox2008 Music collection - VGMdb (http://vgmdb.net/album/7961))
- Hime Nochi Honey Original Soundtrack (HM/HONYEST81 | Hime Nochi Honey Original Soundtrack "Hanitora" - VGMdb (http://vgmdb.net/album/19750))
- Sore ha Maichiru Sakura no You ni Kanzenban - principle (BS2008-02M | cherry petals fall like teardrops... "principle" - VGMdb (http://vgmdb.net/album/10064))
- Konayuki Fururi -Yuzuhara-chou Curling Bu- Soundtrack (FPBD-0061 | Konayuki Fururi ~Yuzuhara Curling Club~ Soundtrack - VGMdb (http://vgmdb.net/album/8569))
- Unity Marriage Soundtrack (SPUS-21010 | Unity Marriage Soundtrack - VGMdb (http://vgmdb.net/album/9189))
- FURIFURI Original Soundtrack (UYE-0006 | Furifuri -Stars Biscuit & O.S.T.- - VGMdb (http://vgmdb.net/album/11507))
- Mare-Mare-Mare Original Sound Tracks (MNSO-0003 | Mare-Mare-Mare Original Sound Tracks - VGMdb (http://vgmdb.net/album/11359))
- Amber Quartz Soundtrack (CSAQ-0901 | Amber Quartz Soundtrack - VGMdb (http://vgmdb.net/album/11801))
- Koisuru Otome to Shugo no Tate Original Soundtrack (AXL-0012~4 | Koisuru (http://vgmdb.net/album/11596))
- ANGEL MAGISTER ORIGINAL SOUNDTRACK (Angel Magister Original Sound Track - VGMdb (http://vgmdb.net/album/14926))
- Zettai Karen! Ojou-sama Official Soundtrack (SMK006H | Zettai Karen! Ojousama Special Sound Track - VGMdb (http://vgmdb.net/album/14406))
- Natsuiro-Sagittarius Original Soundtrack (FPBD-0078 | Natsuiro-Sagittarius Hamaihara Gakuen Kyu-do-bu Original... - VGMdb (http://vgmdb.net/album/13039))
- Yume miru Koi no Musubikata Original Soundtrack (Yume Miru Koi no Musubikata Original Sound Track - VGMdb (http://vgmdb.net/album/14838))
- Kitto, Sumiwataru Asairo Yori mo, Original Soundtrack (TYNR-0005~6 | Kitto, Sumiwataru Asairo Yorimo, Music Collection - VGMdb (http://vgmdb.net/album/16126))

Maybe someone downloaded their releases back when they were fresh and new (or got them from somewhere else) and is willing to share.
Any help is appreciated.
Thanks a lot in advance.

Anyone?

(Don't have to be the exact NipponSex releases just those soundtracks in general)

and with all teh hentai games soundtracks I have.... you had to want something I don't have XD


I will try to help with some. :)

Colorful Sound Collection (GIGA-080233~5 | Colorful Sound Collection - VGMdb) you can find it in this link-
[EAC-080425- (http://isohunt.com/torrent_details/126316741/?tab=summary)


Since It is I've, I am sure I have that, since I am fan o I've and I know I have almost everything.....
But that is in another HD

about those TAK files...if youhave problem with it:
Thread 86348


dont have time now to look for teh rest.
Later when I get back home I will try my other sources




[090626][MF] Natsuiro-Sagittarius OST [320K+BK] - �ʺ��q�� - �귽��y - *��ַs�� - *���Q�װ� Uwants.com (http://www.uwants.com/viewthread.php?tid=8302534)

mediafire link part1 is so dead. :(

but you can try this torrent
[NipponSex]_(26.06.2009)_Natsuiro-Sagittarius_Original_Soundtrack_[MAMI,_NATSUMI,_TOMO]_(320 Torrent Download (http://www.torrentreactor.net/torrents/3206274/NipponSex-_%2826-06-2009%29_Natsuiro-Sagittarius_Original_Soundtrack_-MAMI-_NATSUMI-_TOMO-_%28320)


just found the tracker page of nipponsex.
http://tracker.minglong.org:8080/index.php?page=6&search=NipponSex

the torrents work for sure, but they may take time. They are not dead as you think.

Yeah, I know the Nipponsex tracker but since none of their torrents have any seeders anymore it's of little use to me :(
The same with the torrent for Colorful Sound Collection. No seeds. I hope, you have that one on your HD :)
Still, thanks a lot for your help.