Cast
Roh Jeong-euiBan Hee-jinRoh Jeong-eui will be 23 in Crushology 101 - Season 1 - Episode 4 (Episode 4).
Birthday: Tue, Jul 31 2001
Lee Chae-minHwang Jae-yeolLee Chae-min will be 24 in Crushology 101 - Season 1 - Episode 4 (Episode 4).
Birthday: Fri, Sep 15 2000
Cho Jun-youngCha Ji-wonCho Jun-young will be 22 in Crushology 101 - Season 1 - Episode 4 (Episode 4).
Birthday: Thu, Dec 26 2002
Kim Hyun-jinJo A RangKim Hyun-jin will be 28 in Crushology 101 - Season 1 - Episode 4 (Episode 4).
Birthday: Sat, Aug 24 1996
Choi Ji-suNam Kkot-nimChoi Ji-su will be 27 in Crushology 101 - Season 1 - Episode 4 (Episode 4).
Birthday: Mon, Aug 25 1997
Kim Min-cheolDong HaKim Min-cheol will be 24 in Crushology 101 - Season 1 - Episode 4 (Episode 4).
Birthday: Thu, Sep 07 2000