On July 11, the press conference was held for upcoming KBS drama School 2017.
The dramas director Park Jin Seok was asked on how he made the decision to cast gugudans Kim Sejeong as the female lead, to which he responded, Even before the script was completed, I felt the need to meet lots of rookie actresses, so I met about 200 since March. I met Kim Sejeong towards the start of the process.
He continued, I think I met almost all actresses in their late teens to early twenties, and I did not expect much for Kim Sejeongs acting as her main job is a singer. However, she did really well with the freestyle acting she prepared, and she expressed difficult acting well even without a script.