Fix You - Season 1 Episode 26 I Make People Around Me Feel Miserable.

Woo Joo’s only friend, Ji Sun, does the right thing and hangs up the phone call from Woo Joo’s adoptive mom. Ji Sun's intention was to cut Woo Joo’s ties with her adoptive mom who tried to make use of her for money. However, this triggers Woo Joo’s temper. It was too late when Woo Joo realized that she had said horrible things to Ji Sun. Meanwhile, Woo Joo finds out about the name of her disorder. (Source: Viu)