debt and revenge

His spaghetti westerns, particularly the Dollars Trilogy, are built on cycles of debt, betrayal, and revenge where moral ambiguity drives the narrative.

His films like 'Oldboy' and 'The Handmaiden' are masterclasses in exploring how revenge consumes those seeking it, intertwined with hidden debts and moral complexity.

His filmography repeatedly returns to characters driven by debts owed and vengeance, with 'Kill Bill' and 'Inglourious Basterds' as prime examples of revenge as narrative engine.