A forgotten past and a voice waiting to be found A man who once took everything from Nezumi and Midori awakens in a hospital room. His return stirs up a past Nezumi can't remember and leaves Midori shaken. But in their new home, Nezumi and Ao have finally settled into a peaceful routine. When Nezumi realizes she's never tried singing before, she sets her sights on a new dream: going to karaoke with Ao. So she begins voice training-and takes another step toward finding herself.