@emerald kikyou, thank you for the update.

We just have to be patient a little. Some one for sure will upload the BTS.
Shin Hye just tweeted about it.
박신혜 @ssinz
롯데면세점 광고 찍으러 제주도로 출발~~~했는데 비가 주륵주륵.. ㅠㅠ 바람이 슝슝~ 오늘은 실내촬영이라 다행이지만.. 내일은 날씨가 좋기를..!!
According to Google:
Jeju Island, Lotte Duty Free ads from pickin ~ ~ ~ ㅠ I wind the rain .. mm jureuk syungsyung jureuk-called indoor shooting today .. Tomorrow the weather is good, but the lucky ..!