As long as it is an international credit card, it can be used in Japan. It is recommended that you also call the bank that issued the card to confirm. Also, if you have a UnionPay debit card, as long as you have enough RMB balance, you can use it in Japan. You can withdraw Japanese yen from Mizuho Bank or Tokyo-Mitsubishi UFJ Bank, up to 10 yen per day, and the handling fee is 15-30 yuan per time.