The national championship has begun. Mizusawa High School's first opponent is a tam of foreigners from the Chiba International School of Information Studies. Chihaya is elated that karuta has become an international sport, but the other members are thrown off by the unfamiliar situation. Will Mizusawa High School be able to secure their first victory on their way to becoming number one in Japan? At the same time, Arata arrives at Omi Jingu alone.

The audience at the Yoshino Tournament is taken for a wild ride with so many unexpected twists: Arata, the focus of high expectations, has been defeated, and Taichi, who only just reached Class A, advances to the finals. And now it's time at last for the final round between Chihaya and Taichi, teammates who have been practicing together since they were in elementary school. The odds are in Chihaya's favor, but Taichi isn't playing his usual karuta since he declared that he would defeat her in an official match.