The photo was that of the 35-year-old actress crying.
The picture was taken from her birthday fan meet on Nov.
In 2011, Hyun starred in two films; Come Rain, Come Shine (a minimalist breakup indie directed by Lee Yoon-ki); and Late Autumn (directed by Kim Tae-yong).
Shot in Seattle, Late Autumn was an English-language remake of the 1966 Lee Man-hee classic, in which Hyun played a man on the run who falls in love with a woman who is on special leave from prison (Chinese actress Tang Wei).
For his acting comeback after military service, Hyun chose The Fatal Encounter, his first ever period film, in which he played the leading role of King Jeongjo who faced fierce party strife and assassination attempts during his reign.