Sword Art Online joins UNION ARENA! Kirito and Asuna, as well as popular characters from the first TV anime season to the “Alicization War of Underworld" are lined up on the cards. These Union Arena exclusive illustrations and luxurious design will surely make Sword Art Online fans want to collect them! You can recreate Kirito and Asuna's "switch" or the scene of the Goddesses saving the day when…