You're thinking of this one:
https://exhentai.org/g/761511/9594ba6103/

Coincidentally, I've been considering attempting to translate at least the first chapter of it into Japanese just for fun. If anyone wants to help me do so, I could use help. I'd like someone to help correct my Japanese/make certain phrases sound more feminine/formal/natural. We can upload it to e-hentai. I just think its one of the better Western works, and that it might be cool to give back to the Japanese TSF community.

On that note, if you speak French and see problems with the English translation then let me know before I work on it. I don't think I'll do the whole thing, but it's too early to say for sure. (It might amuse you that the artist is now selling what appears to be the English scanlation, good for him.)