Remake of a 1989 manga by the same author. From the genius of aesthetic horror, Osada Not, comes a mysterious and mysterious phenomenon reminiscent of the Phantom of the Opera, where human drama unfolds on stage. Rosa, a newcomer to the ballet company, acquires a wonderful singing voice as a result of private lessons from the Angel of Music, who she occasionally hears from the other side of the mirror. What is the truth behind the ghost story that is making waves among the company members? And who is the Angel of Music?