NSN is one of the best hardcore BDSM hentais ever. They concentrate on the fetishes more than bonage though, but it has both. Contains: Scat, enema, watersports, food play, pain, s&m, and gore ... just to name a few. The women are raped and used all the time and in every way. If you don't like that stuff, don't watch it. I think its a great series; they literally don't make them like this anymore because they aren't allowed to. If you want to see some classic extreme fetish hentai, this is for you.