Hiragana Karuta Japanese Playing Cards [For Learning] AIUEO karuta game Karuta is a traditional playing cards in Japan 46 pairs of cards. (46 Picture cards and 46 Reading cards), including 4 spare cards. Box size: 12.7 x 8.9cm (5.1 x 3.6in). Karuta size: Approx 8.4nx6.2 cm (3.3 x 2.4 in).