She Was Never a Good Girl.

Orphaned young, Na Danbi is raised under the iron rule of her strict uncle, who molds her life to his desires. Outwardly obedient but fiercely independent inside, she spends a night with Moon Seowon at her cousin's wedding, hoping his influence can free her from her uncle's control. But when he unexpectedly falls for her, they are both drawn into a perilous web of love, power, and secrets.