Nobody wants to be the first (or one of the few) to stick their neck out.When thinking about these things, Japanese men seem to prefer going the safe route and opting for marriage with someone from their own nation.The next time you're walking around in Tokyo, try this quick experiment: look for couples comprising a Western man and a Japanese woman, and count them. Now look for the opposite: Japanese men with Western women. If we look at official statistics for Japanese residents from Western countries (as of the 2016 census), men certainly outnumber women in Japan—by a ratio of almost 2-to-1 if we exclude short-term residents and diplomats (it's 3-to-2 if they're included).We'll bet a dinner and beer that the first case will far outnumber the second. However, let's take a closer look the difference for a moment.Japan is as diet-mad as any other developed country, but the difference here is that most people don’t really need to diet – most Japanese girls are already very slim.
That says nothing directly about relationships per se, but it does weaken the barrier to spending one's life abroad with a special someone.
This gives us a ratio of just under 5-to-1 in favor of men.
For Americans, where the gender gap is 2-to-1 for long-term residence, the marriage gap is more than 5-to-1 in favor of men (1,088 to 201 marriages in 2014, and 1,127 to 199 in 2015).
The cultural battle over Japanese women marrying Western men has been broadly fought for decades, but men still have that battle ahead of them.
A lack of commonality can, in itself, form a barrier.