Now I do enjoy Picross, and at first I enjoyed this too but I've found it way too easy make a simple mistake and if you are going for every gold medal, that is annoying as all hell. The fact that the indicators don't become faded even when you've got all the correct squares filled in until you cross out all the empty squares is also infuriating.
A really fun game but it is very unforgiving (especially the level after the corridor of bullets level) but that just makes it better and more accurate to the source material.
@dgao - Maybe it's the same reason that the symbol for gold that you earn at the end of each battle is the British £ sign instead of the American $ sign. (the dev isn't american.) BTW there is a glitch when using the Sky Feather bow where the arrow used isn't a Sky Feather arrow but an Eagle Eye arrow.
Great game though, ten/ten.
Thanks a lot, I'm glad you had fun! As we speak, I'm working on the next case. Hope you'll have a chance to play that one, too :)