primogeniture

His films like 'Tokyo Story' and 'An Autumn Afternoon' deeply explore family hierarchy, inheritance of duties, and the burden of being the eldest son in Japanese culture.

His epics such as 'The Leopard' and 'Conversation Piece' examine aristocratic succession, the weight of family legacy, and the conflict between eldest heirs and social change.

Films like 'Like Father, Like Son' and 'Broker' directly confront questions of birthright, inheritance, paternity, and whether bloodline determines family bonds and responsibility.