Kono Oto Tomare!

Kono Oto Tomare! (この音とまれ!) is a manga by Amyuu that began serializing in Shueisha's Jump Square magazine in 2012. An anime television series produced by Platinum Vision began airing April 2019.

Plot
Takezou Kurata is the last remaining member of the Tokise High School Koto Club. As he is trying to recruit new members, Chika Kudoo, a delinquent with a troubled past, shows up and declares that he wants to join the club.