Photographer Michael Wolf accurately captures the mass of passengers who squeeze themselves into metro cars during Tokyo rush hour in his series Tokyo Compression. Known for its staggering number of commuters — 3.64 million per day — it’s no surprise that commuter traffic is just part of the daily grind for the Japanese.

Wolf’s subjects are the commuters of the Odakyu line, where he photographed the crushing mass of people in various states of discomfort through the train’s glass windows. Emotional, raw and oftentimes suffocating, his portraits capture commuters at their most vulnerable.

Also see Wolf’s series of accidental sculptures in Hongkong here.

All images © Michael Wolf