구름은 흘러도(1959) / Even the Clouds are Drifting (Gureumeun Heulleodo)

Four orphaned siblings in a mining town are left with nothing when the eldest loses his job at the pit, and the youngest girl, farmed out to neighbours who mistreat her, writes down each day in a diary. The diary reaches a school friend's family almost by accident, is published, and becomes the thing that puts the family back under one roof.

Why it's free: Free on the Korean Film Archive's own channel; KOFA holds the rights to the restorations it publishes.