Here is a link to the first page (or somewhere in the network)
It is created by Hetalia-Canada-DJ on deviantART.
Another doujinshi is also somewhere. The author hasn't updated it in months, so will someone please give her a kick?
This Doujinshi is based on the fanfiction "Giving in" by Artificial Starlight. That you can read it here:
Also the author Hetalia-Canada-Dj is working on a second part of the DJ, as a prize for the Giving in fanclub at DA for reaching 150 followers: