Both Chika and Hiro now know Satowa's secret. Now, Hiro plans to stir more trouble within the club with this new information. How will Hiro's meddling affect the club? Will their bonds prevail?

Chika and the other club members are having trouble understanding Satowa's instruction. Later, 2 girls from the elite Himesaka Girls Academy randomly show up at the clubroom that seem to know Satowa!

The piece for the qualifier has been decided. It's the piece that Satowa played at the National Koto Competition. Since Takinami's arrangement requires two 17-strings, Satowa goes to see her mother to borrow one.