How to use coupon
Select product and add to cart
Tap "Checkout" from the cart
When you tap the "Display Order Details/Enter Coupon" area on the order procedure screen, the "Coupon Code" entry field will appear.
Enter the coupon code in the "Coupon Code" input field and tap the "→" button.
After confirming that the coupon discount has been reflected, proceed to the order procedure.
*The image is how it looks on a smartphone.
In the case of a PC, the appearance of the screen is slightly different, but the procedure is the same.