The episode started with Chihaya and Chitose (her sister) depressed. Chitose decided on giving up her acting career (she doesn't have one lol).
Next morning, during class, the teacher (karuta club's manager's faculty friend) told Chihaya that if they don't recruit 5 new members, their clubroom will be used by the Band Club (?). The Band Club already has a room, but it has many new members so it needs more space. Chihaya decided to let them use the second floor for storage; thinking that they MIGHT get something connected-to-karuta in return.
Her mom bought her a Hakama; this is the only way she can support Chihaya, who is depressed at the moment.
The band club played a song (school anthem) for the Karuta Club and gave their support. Karuta Club members were touched and laughed. [see in the picture above]
Nationals began; they were in an inn. Sumire asked Chihaya if there was someone she likes.