Following the breakup of their former band, guitarist Yuki and drummer Santa decide to start a new one. They recruit bassist Towa, young guitarist Atsuro, and, after considerable persuasion, vocalist Sakuya. Together, they form Lucifer and struggle to succeed in the music industry while also trying to stay together. Additionally, they must cope with personal issues, such as parental objections and watching their old bands achieve success before them. Sakuya is the most troubled member, as he deals with his tragic past and his relationship with teenage lyricist Aine.