Unless they pay much higher interest rate, which then means that the higher interest, the worst currency to have. Countries with hyperinflation can't even convince anyone even with 100% high interest. So high interest is nice, until a level in which it is not nice anymore because they lose more with the devaluation of the currency.
Well Japan is not in hyperinflation yet. I don't think the currency devaluation has hit the "streets" yet and caused the prices of goods to rise. But as Christine Lagarde says:
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