The Master Comes Down from the Mountain: A Fake Marriage Turns Real

[Master comes down from the mountain + invincible protagonist + face-slapping power fantasy]

A woman goes up the mountain to ask a master to cure her grandfather’s strange illness. She fails to find the master, but brings a foolish young man back home instead...

To help the woman inherit the family business, the fool agrees to a fake marriage with her. But her mother takes it for real and goes all out: at dinner, she secretly slips her daughter a love potion...