Travel money cards

BalladMan

Another yes to Revolut.  Just a a
tip, if you need to exchange money, do it Monday - Friday when the fx exchanges are open. weekend the rates are +1% (to account for variances when markets open again). 

https://help.revolut.com/help/card-payments-withdrawals/getting-started-with-card-payments/spending-in-different-currencies/what-are-revolut-weekend-fees/#

Cloudworm

These cards are pretty useless in Japan.

Jints

Currensea. Just direct debts from your bank account using the mid-market rate. No charges. 

Different from Revolut in that you don't pre-load.

WSA

Another one for Wise.