Sa-gong Jang

A general's wife is kidnapped and sold into slavery to a nearby kingdom. She gives birth to his son there. Decades later, the general and son meet on the battlefield on opposite sides in a war... (imdb)

A man's family violently opposes his plan to marry a poor girl. The girl's mother is so disappointed and humiliated that she dies. His parents arrange for him to marry a politician's daughter but later learn that his bride-to-be may be his half-sister. (imdb)

A man assists a woman in danger, but through her actions, she unintentionally causes his death. Everyone in the village knows that she visits his tomb every spring, but no one knows the details of her story. (imdb)