Cost of living in Naha (Japan) is 26% more expensive than in Aden (Yemen)
WARNING! This comparison is based on only a few data points. At this point it is only a guess. It is based on 109 prices entered by less than 5 different people.
For example, you would need at least 432,206 ﷼ (¥196,259) in Naha to maintain the same standard of living that you can have with 342,000 ﷼ in Aden.