In 2015, Jang returned to the milieu of period dramas with "Shine or Go Crazy", a fictional romance between a cursed Goryeo prince and the last princess of Balhae. The film "Empire of Lust" followed, in which he played the wily and ambitious Yi Bang-won who launched a coup to become the king of Joseon. He was next cast in the Chinese film "Inside or Outside", a detective mystery co-starring Simon Yam and Wallace Huo. Jang then played a Joseon innkeeper merchant in "".