There are certain U.S. restaurant chains that have slight or severe differences in their menu or aesthetic when compared with its Asian counterparts- one such that displays severe difference is Dunkin' Donuts.
I'm not sure how Dunkin' Donuts exactly is perceived in other states or cities, but in Los Angeles it isn't exactly a place where couples would agree to meet at or friends would happily gather to chat for hours in- not to say either scenario isn't likely- just that the image of it being done is different than how it is received and perceived in Seoul.
There are even select donuts that never are in the branches in the States:
And they as well as other famous chains love to collaborate together with other brands for limited items. Below is what they had done together with Kit Kat:
From Kit Kat cakes to radios:
To pillows less than $4.00:
Here is the collaboration they had done with Popeye:
Canned donuts or cookies: