Can't recall seeing much about Sister Rose Chang before, but publisher D3 has been busy promoting its number one hit, Earth Defense Force 2. The game was released in Japan at the end of last month and features a gang of raunchy ladies kicking the asses of various zombies and screen-filling monsters.
Sister Rose Chang carries a D or 17+ rating in Japan. It isn't on D3's U.S. site, so is unlikely to ever make it over to the west. To be fair, it doesn't look all that great a game. However, before you cast it to the back of your mind, take a look at the game's site, which has some neat animation and you can see some of the costumes rendered a lot better than the game's screen shots do, saving you a lot of mental effort.