A coupon that allows you to purchase "Patty All Nose Burger" at Lotteria for 500 yen is distributed only to "au Smart Pass" members until December 21st.

Put all 4 types of patties!
Put all 4 types of patties!

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.