Please access iKnow! on PC to apply your coupon.
◆ if you already have an iKnow! account:
1) Log in and go to the coupon page ( http://iknow.jp/discount_code/new ).
2) Enter the coupon code and click "redeem"
3) Confirm that your coupon has been applied and check the expiry date of it.
(please note that every coupons need to be used within 2 weeks)
4) Go forward to the payment page, the coupon price shows up.
◆ if you are going to create a new account:
1) Go to the sign up page ( https://iknow.jp/signup ).
2) Click "Have a coupon code?"
3) Enter your e-mail address, password, and the coupon code, and click "Sign Up".