Secret Sister (2018)

First Air Date: 2018-05-04
Last Air Date: 2018-09-07
Total Seasons: 1
Total Episodes: 19
Episode Runtime: 50 min.
Network: JTBC4
Director: 박소정
Creator: 박소정, 오정

Celebrities become an Unnie (older sister) for a day to a younger celebrity spending 24 hours together, sharing one bed and one blanket.