Apparently Lollipop Chainsaw is getting the censorship treatment in Japan...unless you're willing to buy the premium version of the game.
Two different versions of Suda 51's latest will be released in order to tone down the game's violence and gore -- a CERO D (17 and up) and a CERO Z (18 and up/Adult) version. In Japan, CERO Z (Adult) games are placed in an entirely different section and have many more purchasing restrictions. If you're more interested on the CERO system, IGN has a neat little page dedicated to it.
While censorship is never a good thing, there is one good bit of advice out this report, however. It is said that the Japanese version of the game contains both English and Japanese vocal options. For those who are interested, I can't see them taking it out of the localized edition, since the ability for both languages is already there.