One of Tousen's Rozen Maiden hentai books, isn't it?
Correct, mister EasyV. At least his stuff about yukkuri is not as lewd as his peers. Not a yukkuri with human's private body organs, just yukkuri. This one is on nhentai, the latest english one, page 37 for anyone curious.
I don't read Tousen's works because I'm not interested in Rozen Maiden hentai, but I gotta say, he's exceptional in that he was the only one that kept making hentai works despite Rozen Maiden being forgotten (aside for a really a handful of memes). You need dedication and a love for the original work (or even just a character, since as far as I know all his works revolve around Suigintou.)