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Samaritan Girl
Let him that is without sin first cast the stone at her
2004 · 1h 36m · 6.9 on TMDB
NRJae-Young is an amateur prostitute who sleeps with men while her best friend Yeo-Jin "manages" her, fixing dates, taking care of the money, and making sure the coast is clear. When Jae-Young falls in love with one of those men, she suppresses her feelings towards him in respect of her friend who's jealous.
