Pretty fantastic dark comedy/satire about the death penalty, the justice system, and relations between Japan and Korea post World War 2.
What starts as a quirky and amusing (yet still quite dark) film about what to do with a sentenced to death prisoner who apparently can't be killed gradually becomes more surreal, psychological, and more dramatic.
The progression is done well, and while there are scenes in the second half that can be overwhelming or confusing, at a point I certainly stopped taking things literally and tried to focus on the ideas and themes presented. (Arguably, with the initial premise of a man surviving being hanged, I should have stopped taking things literally almost straight away).
It has an accessible first half that does give way to a more disturbing and confounding second half, but it's a journey well worth taking if the premise sounds interesting to you.