Shin Hye-sun played her first protagonist role in a tv series that airs on what network?
Shin Hye-sun:  She made her debut in the television series "School 2013" and acted her first protagonist role in "My Golden Life" (2017). My Golden Life:  The series airs on KBS2 every Saturday and Sunday from 7:55 p.m. to 9:15 p.m. (KST).
KBS2