Go Eun Ah and Mir was named "sigh siblings".

Go Eun Ah and Mir made the viewers of SBS 'Strong Heart' burst into laughter by opening up about their shared tension.

First Mir commented "As siblings we're close but we get jealous of one another", and "When we go out and someone recognizes my sister first I feel bitter". Go Eun Ah also commented "When I saw my brother as a singer I was jealous and mad".

Mir continued "When I place 1st my sister sighs instead of congratulating me. I also sigh when she stars in another film", making the entire cast burst into laughter.

When Lee Teuk commented "I get a little annoyed when I walk around with my sister in case they think we're an actual couple", Mir agreed with him wholeheartedly, receiving a 'look' from Eun Ah.

Photo Credit: SBS Capture