An elderly woman cleans a piano she cannot play and a car she cannot drive every day. The woman, Chun-hee (played by Kim Hye-ok), moves into a small apartment on her own after her husband dies. Cleaning her late husband’s piano and car seems to be Chun-hee’s way of mourning, as well as a kind of ritual that reminds her she is still alive. What appears to be a pointless daily chore leads to unexpected connections. When she meets Min-jun (Justin H. Min), a conductor who has come to Germany in search of his birth mother, and Seong-chan (Park Dae-ho), a teenage boy who dreams of becoming a pianist, a gentle new rhythm enters Chun-hee’s quiet life. The film “A Flowing Journey,” which was released Wednesday, follows people with seemingly nothing in common as they meet by chance and gradually find their way into one another’s lives. It portrays their individual stories and struggles without exaggeration, focusing instead on ordinary moments spent sharing meals and asking after one another. The lyrical piano melodies that run throughout the film create subtle ripples, adding depth