IBKR, or rather IBSJ (the Japanese entity), has finally allowed NISA accounts.
While it seems that avoiding Japanese would be impossible, at least the UI appears to be in English and all of the supporting webpages are all in English.
https://www.interactivebrokers.co.jp/en/accounts/nisa-accounts.php
As for the actual funds offered, it doesn't come with the eMaxis Slim All Country, but it does carry the Nikko TRACERS MSCI All Country index fund, which is a pretty decent competitor low cost global equity fund that tracks the same index.
https://www.interactivebrokers.co.jp/en/trading/products-exchanges.php#/fundsearch
Although it says IBKR TRANSACTION FEE: YES, looking at the FAQ, I see a contradictory Q&A.
Are transaction fees charged when purchasing or selling mutual funds?
We do not charge transaction fees when buying or selling. However, some funds that charge a fee for retained trust assets.
https://www.interactivebrokers.co.jp/en/support/faqs.php
Of course, if you are a stock person, the IBKR NISA seems like it allows you to trade stocks in a NISA too.
by kite-flying-expert