Lee Yeon has starred in 'Juvenile Justice' and currently stars in 'Duty After School.' The 28-year-old actor is nominated for her role in Netflix's 'Kill Boksoon.' While 3rd-year students prepare ...

Duty After School Season 1: Episode Guide & Ratings. ... Meanwhile, Yeong-soo is not comfortable about walking away from the mission as he still believes the CSAT is not canceled.