For those who are English Speaker!

 

Here is the manual !!

 

 

 

 

 

Step 1 Create new account or log in 

 

 

Step 2: you can see the return on your right side.

 

Please click red square (このリターンを購入する)

 

then confirm the selected return and click read square (次に進む) 

 

Step 3: input your credit card number and address