Rei is always helping out at home, a kind and down-to-earth girl. Not only is she as adorable as a doll, but her warm, affectionate personality is another one of her charms. I've always loved how she looks out for me—yet one day, while I was away, she did something unforgivable. That act of betrayal demands proper punishment...! Here unfolds a heartbreaking episode, revealing her true, vulnerable self.