Her Househusband the King

A gambling king accepts his dying master's request to protect the family for three years and marries the master's daughter. He hides his identity and silently guards them, enduring their contempt and mockery. With only three days left in their agreement, the family faces a devastating trap. He steps in and defeats the opponent with his legendary skills. After fulfilling his promise, he leaves. Only then does his wife panic and search frantically for him.