The incident that had the staff spooked was actually blogged about on Fuwa. I believe a translator was detained and charged for importing a game with a loli in it. A month later the censorship was announced. :/
http://blog.fuwanovel.net/2015/04/danger-importing-erotic-games/
My memory is a bit fuzzy but I think in San Shimai it was stated that the girls were 12/13, at least in the Japanese version. Maybe there were no Canadians translating back then. x3