Tokyo Station, Japan.
A white Shinkansen bullet train glides into the platform. Waiting for it is a line of workers in matching uniforms. As the train comes to a stop, they bow.
The train will stand here for just 12 minutes before it leaves again, full of new passengers. Once the arriving passengers are off, the crew gets seven minutes to clean the entire train.
One worker takes a car of about 100 seats. A team of 22 takes a train. CNN called it the 7-minute miracle.
It was not always seen that way.
In 2005, many of the workers felt their job was something to hide. One of them said passengers would look at them and tell their children, "Look, if you do not listen to your parents, you will become like them."
What turned them from a warning into a miracle began with one man and his first month on the platform.