I Shall Be the Matriarch of the High Noble House (77 episodes)

After her elder sister passed away following her marriage into a noble family, she married her brother-in-law as his second wife. Everyone ridiculed her for being fierce and shrewish, unaware that she only stepped in to seek justice for her sister. When the widowed sister-in-law tried to crush her with family rules, she retorted on the spot; with the dowry embezzled and old grievances buried, she tore apart hypocritical reputations through the account books. Once the truth came to light, everyone realized that her sister did not die of frail fate, but was trapped and consumed by layers of suffocating rules.

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I Shall Be the Matriarch of the High Noble House - Episode 1