Kafka's the Burrow (2014)

The story of a man's "metamorphosis" in a rapidly changing and increasingly isolated world. A man who has seemingly achieved everything ensconces himself in his burrow, a fortress-like apartment complex. But no matter how hard he tries to keep the outside world at a distance, he gets more and more entangled in his own web of fear and paranoia: those outside know he is there, they want him, they want his wealth, and they will inevitably get him.