This Pokemon was distributed by Serial Code to players in HKTW, at various participating stores.
Tapu Koko is normally not obtainable as a shiny in the game.
As this is a HKTW serial code, this Pokemon can be collected on EU 3DS region (running with English Game Save Language),
and JP 3DS region (regardless of save language).
While redeemable on JP 3DS, this wonder card is only distributed as an ENG wonder card.