Director Christine Yoo reportedly cast Kang after her distinctly Korean beauty in Oldboy and Welcome to Dongmakgol grabbed Yoo's attention.
Kang was next seen in rom-com cable TV series The Wedding Scheme, about a kimchi factory president so determined to marry off her four daughters that she embarks on a grand marriage project by getting her girls to cohabitate with prospective groom candidates.
Choi refuses, of course, especially since she has a boyfriend already.
She also avoids Lee's continuous attempts to make a pass at her, but does so in a strange passive way, as if she isn't really unwilling. After the two spent the night together, their relationship just starts to get interesting.
Her passivity shows, that she might have feelings for Lee.