south korea   heroine   father daughter relationship   1930s   impersonation   contract killer   honor   sniper   stabbed through the chest   ambush   traitor   child murder   korea   double identity   uxoricide   resistance   nationalism   imperial japan   female hero   knife in the chest   japanese occupation   friendship   betrayal   murder   revenge   hitman   martial arts   infiltration   japanese soldier   identical twin   japanese occupation of korea   murdering the wrong person