Demon's Souls - a JRPG that's sold like hot pork buns in Japan - is only out in Asia. And may never be released in the West. Doesn't mean you can't play it!
Because decent JRPGs are few and far between on Sony's latest console, fans of the genre may want to look at importing the Asian edition (not the Japanese one, the Hong Kong/Taiwan one) of the game, which features full English language support. And yes, that includes the voice acting.
Sure, the game doesn't look great (least to me), but then, with bigger-selling (Tales of Vesperia) and better-looking (Star Ocean 4) games somehow turning up exclusively on the 360, beggars can't afford to be choosers.