Through a handheld mirror connected to another world, college student Ichika shares a friendship with a boy named Cecilone 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! Exceptwhy are her sisters first words to her Ive 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!