Cut Off My Family, Became a Millionaire

The female protagonist farms the land to put her son through college, but the son lies to outsiders that his parents are dead. Diagnosed with end-stage cirrhosis, she brings the ancestral land title to the city to see her son one last time, only to be humiliated in every possible way by her daughter-in-law and mother-in-law, and eventually forced to press a bloody fingerprint to sign a mother-son severance agreement. The exact moment the fingerprint is pressed, officials from the land acquisition office arrive: that "worthless wasteland" under her name comes with a massive compensation payout. And the severance agreement means—not a single cent of this money has anything to do with her son anymore.