At the beginning of this episode Ji An confesses to Do Kyung she is not his sister Eun Suk. Her twin sister Ji Soo is his sister Eun Suk. Do Kyung gets very angry and falls back into his harsh and cold behavior of earlier. Initially, he isn’t willing to grant her the opportunity to confess to father and mother Choi herself, after she has finished the preparations for the
Haesung Group 40th anniversary event. When she asks to delay until after the event because of Ji Tae’s wedding, he is still not willing.
Bron: KBS World TV, thank you!