

Twenty is the age that everyone considers to be the best time of their lives. However, we have never suffered from love for the opposite sex, dreams for the future, and passion for life as much as we did at that age. The problems of 20-year-olds, which are childish and simple to the eyes of others, but are more serious than anything else to the people concerned. ‘Twenty Years Old’ look at the problems from their point of view and try to solve college life in a serious but pleasant way.
Kim Eun-young, Yoo In-sik
SBS

Kim Yong-geon
Sang-hyuk's Father

Lee Mi-young
Sang-hyuk's Mother

Kim Ji-woo
Song-yi

Yoo Seo-jin
Professor