The K2 starred Song Yoon-ah as Choi Yoo-jin.
== Early life and education ==Choi Yoo-jung was born in Guri, Gyeonggi Province, South Korea on November 12, 1999
Song made her acting comeback in the 2014 drama series Mama, which revolved around a terminally ill single mother's quest to find a loving family for her son before her impending death, leading to her befriending the current wife of a former lover

