Ep. 11: Makoto holds the key to her grandfather's piano secret
Aired on March 17, 2016

11
Mr. Kusakabe's former teacher has left a will stipulating that his granddaughter, Makoto, is the sole individual aware of the location of the key to his cherished piano. The narrative focuses on whether the characters can successfully uncover the mystery surrounding the key's whereabouts. This central conflict drives the episode as they attempt to solve the puzzle left behind by the deceased teacher, relying entirely on Makoto's unique knowledge to locate the instrument's key.
Episodes
- Ep. 7 · Chika and Haruta pursue the geology club leader to secure a budget increase for the band club.
- Ep. 8 · Naoko seeks Chika's help while her aunt consults the First Love Sommelier
- Ep. 9 · Chika and Haruta investigate the Fujigasaki High School brass band advisor's suspension and the Asmodeus peeping Tom mystery.
- Ep. 10 · The district contest arrives as Haruta vanishes and Chika encounters a writer probing Kusakabe's history.
- Ep. 11 · Makoto holds the key to her grandfather's piano secret
- Ep. 12 · Kusakabe Receives Hamamatsu Orchestra Offer While Haruta and Chika Investigate His Past