Since high school, Tamotsu has watched his best friend Aki grow from a rebellious but musically talented teenager to one of the most popular music artists in Japan. Though he’s been secretly in love with Aki for years, enduring the endless string of admirers Aki takes for lovers, Tamotsu suffers silently because he knows deep down that he is really the one person in the world Aki turns to for true friendship and solace.

But when Aki unveils an unknown and haunting love song he’s composed in secret during a concert, Tamotsu fears that Aki has finally found someone he can have a lasting relationship with. Only such a deep, abiding passion could inspire a song that beautiful.

Is Aki really saying good bye to him in the only way he can, through his music? Or is Aki telling Tamotsu something else?