[??? ???? ?? ??? OST Part 4] ?? (JOY) - ?? ? ?? (Your Days) MV - YouTube

https://www.youtube.com/watch?v=Ccj5BnY2EqE

tvN ????? ‘??? ???? ?? ???(?? ???, ?? ???, ?? ‘????)’? ??? ??? OST Part 4 ‘?? ? ??’? ????. ? ?? ?? ?? ????? 2010? ??? ?? ???? ???????, ???? ??? ??? ???? ????...