I recently got the PSP bundle, so this is my first time owning a PSP. My sister also wants to play BBS and progress through the 3 character scenarios. I know the game stores a system data file to tract the 3 files for each character, and I want to complete all three to unlock the special features. But me and my sister sharing one memory stick, so my files for the three characters and her 3 files are stored within that one memory stick. The system data file gets updated each time me or my sister play BBS. My question is that even if my sister has her 3 character files (they're in Beginner Mode) with my files (Standard Mode) and there's only one system data file, is it still possible for me to unlock the special features with my 3 files after I complete them?