Actually Japan is like an isolated world.
Every movies or games have to be dubbed in Japan if they want to get their share of Japan market.
Most of them couldn't speak English.
Most of them nowadays also don't have a clue that their country ever invaded and colonize Indonesia back in 1942.
They tried to erase their dark history and live safely in their own bubble.
To be fair, I would behave the same in fear of what happened to Hiroshima and Nagasaki.