Na Gongju (Oh Yeon Seo) becomes mad at Oh Ja Ryong (Lee Jang Woo) for treating her like his younger sister

Na Gongju (played by Oh Yeon Seo) loses her temper when she hears Oh Ja Ryong (played by Lee Jang Woo) telling her that she is like a younger sister to him.
In January 17’s airing for MBC’s daily drama series Oh Ja Ryong is Coming, Oh tells Na, “You are like a younger sister to me which makes me feel like your older brother,” not being able to read her feelings for him.
Oh continues, “As I think back, you and I went through a lot of things together. We’ve also grown on each other so much. So when I see you going through a hard time, it hurts me too. From a certain moment, you are like a real sister to me.”
Startled, Na steps back and exclaims, “A younger sister?” Oh tells her with a concerned look, “I’m saying this as a person who cares about you as an older brother. Don’t date that guy who drives a foreign car. I think you’re attracted to a wealthy man because of your bad circumstances at the moment.”
Feeling ridiculous about the situation, Na shoots back, “How would you feel if I tell you not to see Kim Mary because she is a strange woman?” but Oh replies, “How can you compare Mary to such a weird man?”
Eventually, Na loses her tempter and argues, “Did I ask you to become my brother? Did I say I wanted to be your younger sister? You suck,” and stomps out of the place.

• Source: TV Report