In a rare case of a Japanese food promo item making the trip over to North America, New York's Go Go Curry will be carrying the Nyarko-san clear file. Ask for a "clear holder" on May 5th GO GO BIRTHDAY, (a "go" "five" word pun) and you can score one of their limited supply of 55 moe evil goodies.
Also to celebrate Go Go Birthday, at all 4 locations in Manhattan, any single size curry will be sold for $5 along with 5 free topping coupons. And the 5th, 55th, 155th, 255th, 355th, 455th and 555th customers of the day at each store will receive an original GO GO CURRY T-shirt.
The Nyarko-san promotion ran in Japan on April 25th.