You can request a shopping agency service "Worldshopping.global" to buy itmes on behalf of you and to have them shipped. This service is conducted by zig-zag,Inc.
Please press a banner of Worldshopping on shopping page.

By using this service,
・You can easily and smoothly buy items in English.
・You can use not only credit card, but also Paypal and debit card such as China UnionPay.
・Besides merchandise price total, it will cost 10% of Merchandise price total as commission fee, domestic shipping charge in Japan, overseas shipping charge, and handling charge.

To see more details about the agency service "Worldshopping.global"
→ https://www.worldshopping.global/en/help