Refer to the topic linked above... Since there are little to no hentai games for the DS, your best bet would be: 1. Converting a downloaded manga/doujinshi for Comic Book DS 2. Attempting to convert a visual novel to the Visual Novel DS format (Not worth it, last time I looked into this I was told it would take knowledge of some basic programming language)
Fun Fact: The first DS-Bricker was a Hentai Game...or slideshow, Idunno. But ya. Also, as far as RETAIL games, Doki Doki Majo Shinpan and its sequel are about as close as you'll get. But it's not full-blown hentai. You jut touch young anime girls. Never played it, never plan to. Oh, and SNK made it. From metal slug to...what the hell, SNK.
Hmmm... I don't think Nintendo DS support such genre. Well, at least I don't know a single console that supports hentai. I guess hentai are for PC only. Correct me if I'm wrong though.
Not only, just the majority. In fact, I think there are a number of hentai games for every console, but mostly in Japan. The only reason why we don't know about them (therefore giving us the impression that there are more PC hentai) is because of the lack of Japanese players and Japanese news that talks about the latest Japan-only games.
