This burger is a special menu with shrimp patties, rib patties, and exquisite cheese patties sandwiched in addition to regular beef patties. At the same store, there is a service that allows you to add your favorite toppings, but using this coupon you can purchase at a better price than adding toppings.
au Smart Pass is a service that allows you to install some paid apps for free and use coupons, points, etc. for 390 yen per month. It is provided for Android / iOS.