This is becoming something of a pet project to me. It makes me sad it seems so hard to find Sonic doujinshi, when I know for a fact there is beautiful stuff out there. So, here's a list of the places I have found.
Artists: MRi and
ASAThese two artists top the list for having some of the most gorgeous Sonic doujinshi and for SHIPPING INTERNATIONALLY. You can buy and read these even if you only speak English. Their art is top quality (go look at the sample pics. GO!) Some of their work is more bloody (look at the back cover of Cross x Limits), but not over-the-top. There are some hints of Sonic/Shadow, but I really don't think you have to like the pairing to enjoy these. (Also, when I ordered I got the most beautiful extra EVER. *is still in awe of it*)
Books on offer:Unfortunately both books are now sold out. Leaving this artist up in case they have more in the future.
Where to buy:Offline section is here:
http://sonadow.xxxxxxxx.jp/off.htmEnglish order form found here:
http://form1.fc2.com/form/?id=299229Artist: TC (edit: fixed link, should be right now.)
Doujinshi printed in English! Again, we have accessible, readable doujinshi even if you are confined to English. This one is hentai, Sonic/Amy mostly. If you buy from the artist it's actually affordable.
Books on offer:Amy Untold Finally: Yes it's in English and plot to follow, but still pretty much hentai.
Amy Untold Fantasies: Now available. According to the site this will be more hentai-oriented with less plot.
Where to buy: Often on ebay, for sale by publisher/artistArtist: Blue-BlackAgain, some very gorgeous art. If you were looking for absolutely no yaoi and no hentai, here's the first place I would point you. This one you may need a proxy buyer in Japan to help you buy. No English translation, but I think just from the art you can enjoy these stories.
Books on offer:7th JAMS: Anthology! This book is 140 pages and reprints a lot of older doujinshi like Give me! Your smile!! And Forget Me Not.
Little: So... cute... This might be my personal favorite. Features Sonic, Shadow, Silver, and Mephiles.
Trip Trip Trip!!: An anthology with different artists, so a nice mix of things.
Give me! Your Smile!!: Very short, funny story. Sonic and Silver try to make Shadow smile.
Open Your Heart and Live Life are novels in Japanese. Open Your Heart has illustrations by Blue-Black, Live Life just has the cover by them (this one is Sonic/Shadow).
Where to buy:Offline section is here:
http://blueblack.yu-nagi.com/offline.htmThat... is actually it for sites where I am sure you'll be able to buy Sonic doujinshi. D: The site offering the Knuckles/Rouge anthology had to re-print, and I've no idea if the books are available now or no. I didn't buy On Your Mark from the circle website, either. (If you want to look into either I will be happy to give you all the links and information I have.)
Edited for grammar fail, and also to note that I updated my
Sonic doujinshi page.