At each McDonald's store (excluding some stores), a campaign to sell "Chicken McNugget" at a special price started on December 7th. 30% off 15 pieces for 390 yen (tax included).
The product comes with 3 nugget sauces. You can choose your favorite flavor from the limited-time flavors "Fruit Curry Sauce" and "Creamy Cheese Sauce" that appeared on the same day, and the standard "Barbecue Sauce" and "Mustard Sauce". Until January 3, 2017.