Pokemon Center 2018 It's Mimikyu Campaign Mimikyu & Pikachu Large Size Cardboard Storage Box (EMPTY). NOTE: This is made of CARDBOARD. Contents of the box NOT INCLUDED. You will receive only the EMPTY storage box. It was only sold at the Pokemon Centers in Japan, in February, 2018, for a limited time and in limited quantity, during the It's Mimikyu campaign. The contents of the box have been removed (sold separately). The top opens up and it can hold approximately 750 cards without protective sleeves (You put your own cards in the box).