Cost of living in Naha (Japan) is 42% 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 121 prices entered by 5 different people.
For example, you would need at least 347,900 ﷼ (¥147,715) in Naha to maintain the same standard of living that you can have with 245,000 ﷼ in Aden.