Board Thread:Questions and Answers/@comment-34651435-20180210171503/@comment-31819713-20180211154724

https://www.reddit.com/r/ensemblestars/comments/4oii3w/question_about_the_currency_you_need_to_buy_dias/

Hmm, according to this, people had trouble on Android buying dia (Eur -> JPY)...

You can try changing your Google Play's Address to a Japanese Address/Region? See if that work. But, the thing that might be concerning is that for security reason if there's a $10+ balance on your account, they might not let you do so.

You can always try it out and see if you are able to redeem your balance?

I haven't bought dia for this game. But, I bought hourglasses for Mystic Messenger and it was charging me in whatever currency I was in and I was using a credit card.

I didn't think this would have been an issue in this game...