The japanese Rule of Rose wiki recently asked on twitter in which countries the game was actually banned. We know its release got canceled in some countries, that there were polemics about it, but apparently it hasn't been "banned" anywhere, except in Italy.
Thus, they are looking for a source that woud list the countries where RoR has been banned from sale. Which sounds like a good idea since we seemingly don't have this either.
Also, where can we consult the sources used for the Controversy paragraph in the game's page?