The Kumamoto branch of Din Tai Fung (the chain mentioned in the article) can be found in Tsuruya Department Store:

Kumamoto Branch 6-1 Tetori-cho Kumamoto City 860 8586 (7F Tsuruya Dept. Store) TEL:81-96-211-0667

http://www.japantimes.co.jp/life/2013/12/31/food/juicy-chinese-dumplings-will-shanghai-your-taste-buds/