Cards on the Table, I Have a Spend-Money Cashback System (28 episodes) - AllShorts

The male lead was abducted as a child. Unable to find him, his family took in another child, who thus rightfully became the young master of their family. When the male lead turned 20, his biological parents finally found him, but he had no wish to go back, because he had activated a Spend-Money Cashback System: the more money he spends, the more cashback he gets.

Cards on the Table, I Have a Spend-Money Cashback System - 1