I remember playing this game on my nokia around 10 years ago... It is censored precisely because of that... It was a game for Nokia phones... I say we need to reclass it as Game CG ("Press any key" is a giveaway. And it is mania not manga, but "i" is just weird)
And now that I look at it a few pictures seem to be missing.
I see wherr you are coming from... It is indeed of French origin... So seems like Western tag should be applied... Though never understood that tag and personally consider it extremely confusing.