Extra pages from Anata no Karada, Itadakimasu. The first 6 are a continuation to the original doujin, and then the last 9 pages are a separate story.
Please support his work by buying the full doujin here: http://www.dlsite.com/maniax/work/=/product_id/RJ225706.html You will need to register with the site before being able to purchase his works through credit card or other methods. I heard that it will be uploaded to the ENG DlSite soon, so I will update with link to that when it becomes available.