yes harada made this one for instance...
http://www.mangago.me/read-manga/gintama_dj_ochiru/
I didnt read much tho...
http://www.mangago.me/read-manga/gintama_dj_kazoku_gokko/
the other are in myreadingmanga website... there are 403 stories there... all otp
I'm Gintama's biggest fan, so here ya go. My suggestion is read 3745House's dj's first. After that you might want to check out the actual Gintama manga. Here's two links that will give you, oh, about a hundred years worth of hot Gintama dj reading: http://www.mangago.me/r/l_search/?name=Gintama
http://myreadingmanga.info/?s=Gintama+dj
The photo you linked to looks like it might be a Mikami Takeru/3745House pic, but I can't think of any dj by them that has Hijikata tying Gintoki's dick. It might be fan art from deviant art or some other artist's site. If you're dying to find that particular art you could write to Ikeman scans for the reference. My opinion: Scanlation groups owe it to the artist to credit their work when they use it for their ads.
One more thing: The art you show is Hijikata/Gintoki, and when it's that pairing, the dj's tend to be sweet, loving, and hot. When it's Gintoki/Hijikata things can get very dark. Don't know why this should be. Gin would never do half the stuff in the gin/hij dj's.
3745 has one of THE best djs. The art is absolutely STUNNING. The characters look so HOT! ε=ε=(ノ≧∇≦)ノ
Thank you so much, I really appreciate the help. And, yes, that's something I have noticed too. Doujinkas apparently have a thing for making Gintoki a sadistic seme for some reason (not that I mind, particularly (づ ̄ ³ ̄)づ )
Please tell me this has a dj!
http://www.mangago.me/read-manga/omae_de_nakya_dame_mitai/mh/c001/31/