On the March 13 airing of tvN's 'Snail Hotel', Kim Sae Ron revealed, "Won Bin ahjussi and I weren't originally the cast for 'The Man From Nowhere'."

She explained, "Originally, another child actress had my role but she gave up because she had to film another drama." She added, "So I made it on 'The Man From Nowhere' like that and I remember crying so much. I've been taking supporting roles for a long time up till then. I was especially happy because it was a time when I started experiencing the fun in acting after my first lead role film 'A Brand New Life'."

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Kim Sae Ron continued, "Auditions were so hard and only the same child actors kept getting�picked but then I met 'The Man From Nowhere."