A buddy series of "Dukgyu," a 68-year-old making weird poses in front of the gym mirror, wearing a sleeveless t-shirt, and his grandson "Donghyun," who just doesn't get him.
Lee Byung-joon
Deok Gyu
Cha Sun-hyung
Dong Hyeon
Lee Jae-hwan
Father
Kim Mu-seob
In Ho
