Minako vs Rei, Where's the Battle?

Having been taught by Mamoru that the only way to protect the planet is to do it oneself, Usagi seeks to harness the power of the legendary Silver Crystal. Meanwhile Minako decides that, given how little remaining life she has left, she will quit singing and focus only on the completion of her previous existence's mission. Just as she is about to does this, she is informed by the office president that Minako's work will be taken over by a new face. Having suddenly snapped away her work, the identity of this new idol who appears before a surprised Minako is...