Son, Dad Realizes His Mistake, Please Let Me Recognize My Ancestor and Return to My Clan.

The protagonist's father is hopeless and pursues a widow with a stupid son. The widow was so angry with the protagonist's mother that she even teamed up with the protagonist's father to devise a poisonous plot to frame the protagonist. The protagonist obtains the system, powerfully cheats, brutally tortures the widow, and drives his father out of the family. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.