This post contains adult links and images.
The adult men's manga
Kojin Jugyou (個人授業) by
Kino Hitoshi will be getting an adult OVA adaptation.
The cover of the manga: (NSFW)
An akiba blog post about the manga: (NSFW)
http://www.akibablog.net/archives/2006/12/post_951.html
The first OVA episode will be released on 25/4/2008.
Getchu's page for the first OVA episode:
http://www.getchu.com/soft.phtml?id=508325