Cost of living in Miyazaki (Japan) is 142% more expensive than in Aguascalientes (Mexico)
This comparison has some inconsistent or sparse data. It already provides a reliable comparison but it is not bullet-proof. It is based on 250 prices entered by 22 different people.
For example, you would need at least Mex$ 58,185 (¥341,049) in Miyazaki to maintain the same standard of living that you can have with Mex$ 24,000 in Aguascalientes.