The voice actor's joke.
Because Arata seldom shows up, the big sisters don't recognize the voice actor for Arata.
While Chihaya on the highschool graduation trip, the qualifier match is on going. In the eastern qualifier competition, Taichi loses the competition. Harada sensei finally enters the final. His opponent is Sudo! It would be the competition between old generation and young rising player. In the western qualifier, Shinobu thinks Arata is going to win. Also, she's hungry. So, she secretly praises Arata and leaves the building. Arata finally enters the final, but his bad stomach kicks in again. During the match, he has to run to the restroom. When he comes back to the match, he finds that he is on the losing side.
Finally, Arata and Megumu become West Japan's representative. Harada sensei is also near his dream. He finally has the chance to challenge the karuta master...he is almost there. It would be hard for Chihaya. She has to choose the person for cheering.