Hibi Rock: Puke Afro and the Pop Star (2014) on Netflix

Takuro Hibinuma had no talent for sports or aptitude for studying throughout high school and never had a girlfriend. However, he found his true calling when he began playing rock music. While in high school, he formed a rock band named Rock 'n' Roll with his friends. After graduation, they move to Tokyo and begin playing live shows. One day, at a live house, Takuro meets a world-renowned idol singer named Saki Utagawa and his fate is irrevocably altered when she asks him to write her a song.