There has been plenty of updates to the PSP version of PlayStation Store in Japan ever since it was announced at Tokyo Game Show 2007. The latest goodies is demo for Yuusha no Kuse ni Namaiki da or in English “For a Hero, Youâ€™re Pretty Impudent”, available from today until the end of the month. This is one cool title worth checking out really, unfortunately it’s only for people in Japan, hope it will be made available to all later.
Update: A very nice reader (delphi1981, thanks) point me to the direct link of the demo file. So download it, create a folder named UCJS10076 inside the GAME folder and enjoy the demo! Firmware 3.71 is required.