Seasons & Episodes
EP 1
Twenty-year-olds
One winter day, Tae-hyeon (Jeong Seong-yoon) and Chae-ri (Lee Yu-ri), dressed in school uniforms, run into the universit
EP 2
Episode 2
EP 3
Episode 3
EP 4
Episode 4
EP 5
Episode 5
EP 6
Episode 6
EP 7
Episode 7
EP 8
Episode 8
EP 9
Episode 9
EP 10
Episode 10
EP 11
Episode 11
EP 12
Episode 12
EP 13
Episode 13
EP 14
Episode 14
EP 15
Episode 15
EP 16
Episode 16
EP 17
Episode 17
EP 18
Episode 18
EP 19
Episode 19
EP 20
Episode 20
EP 21
Episode 21
EP 22
Episode 22
EP 23
Episode 23
EP 24
Episode 24
EP 25
Episode 25
EP 26
Episode 26
EP 27
Episode 27
EP 28
Episode 28
EP 29
Episode 29
EP 30
Episode 30
EP 31
Episode 31
EP 32
Episode 32
EP 33
Episode 33
EP 34
Episode 34
EP 35
Episode 35
EP 36
Episode 36
EP 37
Episode 37
EP 38
Episode 38
EP 39
Episode 39
EP 40
Episode 40
Popular Cast
Lee Yu-ri
Chae-ri
Gong Yoo
Joon
Shoo
Soo-young
Jung Sung-yoon
Tae-hyun
Moon Ji-yoon
Sang-hyuk
Lim Seong-eon
Min-hee
Jo Dal-hwan
Seok-goo
Kim Yong-geon
Sang-hyuk's Father
Lee Mi-young
Sang-hyuk's Mother
Kim Ji-woo
Song-yi
Yoo Seo-jin
Professor
