@HiddenAway It's not actually approaching as such-it only ever appears in chests. You can't even get it by accident because you get a message along the lines of 'evil, evil chest! Do you seriously want to open it??'. ;p Apologies if I misunderstood what you meant and you knew that! It might be connected to the number you open, but I first had it in Yukiko's castle relatively early on.
PSN ID: finn1