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On her Instagram, Luna wrote a heartfelt message to her sister that went, "The first photo shoot with Jinyoung unnie whom I love. [She] must have been tired since the filming began early, but she never stopped smiling, which I was touched by. Let's treat our grandmother well in 2015, be filial to our parents, and spend [the year 2015] happily I love you," along with a picture upload of the two smiling sweetly into the camera. 

Luna's loving words toward her sister attest to the close sisterly bond that they two siblings share. Let's hope Luna and her sister will continue cherishing each other!

???? ?? ????? ? ?? <3 ?????? ?? ??? ?????? ,, ?? ???? ??? ?????,, ?? ?? 2015? ?????? ???, ???? ???? ???? ??? ???.

A photo posted by ??? (@fx_luna_sunyoung) on Jun 29, 2015 at 4:33am PDT

Sweet.

A photo posted by ??? (@fx_luna_sunyoung) on Jun 29, 2015 at 5:21am PDT