The Outcast Son-in-law's Rise

In a famine year, live-in son-in-law Ian Jacobs faces a desperate situation: family deceased, bully pressing debts. To protect his five young sisters-in-law, he awakens the 'Family Guardian System'. He brings his enemy to justice. He becomes the pillar of the Sullivan family, wins the hearts of his five sisters-in-law and a female confidante, starting a happy life.