On which channel did a television series air in 2015 that starred the main vocalist of the South Korean girl group Apink?
Cheer Up! (TV series):  It aired from October 5, 2015 until November 10, 2015 on KBS2 every Monday and Tuesday at 22:00 KST for 12 episodes. Jung Eun-ji:  She is best known as the main vocalist of the South Korean girl group Apink.
i don't know