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The Hidden Son-in-law: Revenge for Saving Grace

He, the heir of a top wealthy family, was almost murdered by his elder brother's conspiracy. After escaping by luck, he lived under an assumed name and married into a poor family whose daughter once saved him. He guarded his benefactor silently while hiding his true power. Years later, when the family fell into internal chaos, the power-seeking elder brother tried to kill him again. Finally, he revealed his real hidden power, publicly humiliated the ambitious brother, set the family right, and gained a happy life.