Through a handheld mirror connected to another world, college student Ichika shares a friendship with a boy named Cecil one that only her older sister, Karen, knows about. When Karen and the mirror disappear one day, Ichika is devastated. But grief turns to shock a year later when she, too, is sent to the world on the other side, only to find her lost sister and a grown-up Cecil! Except why are her sister s first words to her I ve missed you, Karen ? And why is everyone else calling her Ichika ?!In a world where her name and her past have been stolen, Ichika must find a way to forge her own destiny!