Cool Devices is one of the classic Hentai-Animes that was worth watching it. CD itself Has 11 Episodes which are independent from each other. In each Episode you will experience a new kind of story, characters and fetishes. The Stories itself aren't really stories since there is just one episode and its more about the different kind of desires humans can experience. All different kinds like orgies, yuri, costumes, bondage, slavery, public sex etc. are included here. You surely will find your type of, even if you might dislike some fetishes.
This series doesn't include vulgar things like scat or gore though. If you would like to enjoy some special and a little darker sides of Hentai, without mainly brutal vulgarity, you should give Cool Devices a try. Like i said, it covers the most of common fetishes and will be worth watching it. Even to get some new ideas for your sex life ;9
