Lady O
Fictional Character
With her calm demeanor, she received the favor of Queen Park and became the mistress of the Central Hall. However, unable to turn Lee In's heart away from Court Lady Dong even after three years and failing to produce an heir, she began to face Queen Park's oppression. Her mental state started to crumble, and she became a person who had not a single day without suffering. Although she does not show it outwardly, she harbors intense resentment, even wishing to kill Court Lady Dong.
(Source: Korean = NamuWiki || Translation = MyDramaList)