On a recent episode of Mnet‘s Running Girls, Sunmi got a surprise visit from her step-father.

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Upon his visit, Sunmi’s step-father greeted all of Sunmi’s friends and gifted them with a snow crab.

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But Sunmi confessed in an interview that he was actually dripping in sweat due to nervousness.

My step-father was really nervous because it was a broadcast. He was dripping in sweat. I was so thankful.

— Sunmi

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Sunmi then revealed that whenever she’s asked about her father in interviews, it’s usually about her late biological father, which she feels sorry about.

When I do broadcasts, there are times when my late father comes up. My step-father doesn’t say anything about it, but I think it makes him sad.

— Sunmi

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She explained that despite not being related by blood, her step-father went above and beyond for her and her siblings.

We’re not blood-related, but he sent all three of us to college, and I’m just thankful to him for many things. So I want to boost his spirits and let him brag that Sunmi is his daughter.

— Sunmi

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Sunmi’s biological father passed away 3 months before her debut back in 2006.

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Sunmi’s mother later remarried her now-husband who became Sunmi’s step-father.

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Watch the full clip below: