Ode to the Goose (2018)

Yoon-yeong has been harboring feelings for Song-hyeon, a friend's wife. When he finds out that she is divorced, Yoon-yeong and Song-hyeon take a trip to Gunsan on a whim. They find lodging at an inn where the middle-aged owner lives with his autistic daughter who does not leave her room. The four become star-crossed lovers in the city of Gunsan.