Furyu did a special price cut on the digital version Future Card Buddyfight Yuujou no Bakunetsu Fight! Nintendo 3DS game in the Japan Nintendo eShop.
From today (January 18, 2017) until February 1, 2017 you can buy the game with 50% OFF which means the game at the moment costs 2689 Yen (with tax).
Before the release of the next game the Future Card Buddyfight Mezase! Buddy Champion! it is a great deal to get the latest one for a bargain price.