Mystery: How did MN hockey tournament pins end up on shorts in Tokyo?

What we have here is a mystery that will require all of the internetiness of the internet to solve.

How does a pair of cut-off jeans festooned with pins from the Minnesota state hockey tournament end up on a rack in Japan?

We think the shorts are merely the display device for the pins, leaving the question of how the pins got to Tokyo.

Do that thing you do, Internet.