I Asked You to Break Off the Engagement, but I Didn't Ask You to Beg Me to Come Back All over the World.

The male protagonist hid his identity as the richest man/miraculous doctor and worked as a door-to-door son-in-law in the female protagonist's family for three years. He was dismissed as bankrupt and broke off the engagement. The male protagonist happily signed and left, turning around and regaining his invincible status. The ex-wife's family then encountered a crisis and discovered that the boss she had always looked up to was actually the "trash" she had driven away. From then on, she started chasing her husband to the crematorium, but the male protagonist never looked back.