now, you can withdraw your cash everywhere in japan
i found that SEVEN BANK (in Japan) released international ATM service in Japan. you know, it was difficult to find places to exchange or withdraw your cash in japan. you had to go to bank counter by 3:00PM or find ATM of post offices. but know all you have to do is just find SEVEN-ELEVEN convenience store around you and you can get japanese yen through VISA, PLUS, Union Pay etc.
i see lots of foreign tourists everyday in tokyo. but cash is really essential to enjoy shopping. i mean, some shops don't accept credit cards. so i hope that this service will bring better condition to trip in japan.