Japanese clothing shop worker's job

Look at this picture carefully.
This picture is a Japanese clothing shop "UNIQLO".

Do you know that?

Wow, this collapsed T-shirt can be seen and understood that what print it them.
"NARUTO" that is Japanese very popular manga(cartoon) are designed these T-shirt.
The left ones are Naruto and the right ones are Sasuke (He is a Itachi's younger brother).

Not the all shops are doing same things, but many Japanese workers are thinking what I need to do now for customers.
This is the Japanese worker's job.

Or it is too much work?