You don't need a second language :P I actually have a backstory for each of the characters and have played them before, so whenever your character points out or does something that matches something in my story... that triggers the 'flashback' and you get a fragment of memory. Most of them can be gotten by just asking the girl about various things, hope that helps. If it gets annoying I can remove the requirement of the piece for hard modes, since I do have other ideas with them.