Watch on SFlix. A civic music group, created by Tsukasa Nitta, a high school teacher in Koriyama City, and Akiko Watanabe, the daughter of a record shop and teacher of a music class, invites Takuro Yoshida to Koriyama City to hold a concert. He then starts being harassed by the Hashimoto group, a local gangster group which manages the city's entertainment.