I live in a country, Australia, where I can get upwards of 5% interest per annum on cash deposits held in a bank account. Having parents-in-law who live in a country, Japan, that offers about 0.02% interest per annum, I see opportunity. In fact, we know someone who banks a lot of her parents savings here to get a higher interest rate and it works out well for them.
My question is, how do I start up this as a service to people in Japan? Has anyone had experience doing this? We visit the country regularly, love it, and have some small connections.