What do I do with Deluca coins?
I keep getting Deluca coins for leveling in various things - are these good for anything in particular, or can I just sell them for Dewdrops? I haven't yet figured out what they might be good for, and if I should keep them for something or not.
According to the Wiki for this game:
Can be used in Port City Deluca's casino at the gambling machines to earn useful items.
That seems to be the only use for them.