Uhh I don’t think it does. Japanese websites have notoriously terrible accessibility and UX.
The UX is fine for people who are used to a culture where they see massively information-dense, brightly colored, and spacially organized things all the time. There's a strong cultural correlation in UX design, and what works in one country often doesn't work in another. I've worked on a few websites that are accessed globally and it's common that a 'one website for everywhere' strategy yields poor results. You have…
Don't even get me started on how well Japanese websites handle non-traditional-Japanese names, or how banking apps that supposedly support English actually display most text and dialog buttons in Japanese.
There's a lot of great things about Japan, but the UX/UI here is absolutely terrible.