Kono Oto Tomare! (dub) Episode 13 -

The episode focuses on the club’s performance of the complex piece "Kuon," which the group has struggled to master. The stakes are raised significantly by Chika Kudo's secret physical condition:

E13 - Kuon * Japanese, English, Español (América Latina), Português (Brasil) * English. * 14+ Profanity, Violence. Crunchyroll

While this episode concludes the first half of the series, the story continues in Season 2 (Episode 14 onwards), where the club faces the consequences of their performance and pursues their goal of reaching Nationals. Kono Oto Tomare!: Sounds of Life (English Dub) | E13 - Kuon

Takinami-sensei discovers the injury and orders Chika to stand down. However, after witnessing the group's unity and Chika's resolve, Takezo and the advisor ultimately decide to let him play.