How would you feel if you lost your best friend forever? Well this is how it is like for Miyuki Kimura your average fifteen year old girl. At the age of five an incident occured that lead to her friend being placed in a coma Miyuki has no idea why it was her friend Kai who was the one injured when it should have been her, ten years later Kai is still in the coma and Miyuki is beginning to wonder if he will ever wake up. Although Kai isn't the only loss that has taken part in her life, her father was murdered when she was two and it took her several years to recover from that and now Kai's the one who's on the verge of death with only a couple of months left before the hospital cuts all of Kai's life support leaving many questions such as will Miyuki be able to overcome the pain with the help of her friends? Will Kai ever wake up? What's this mystery all about? And why is Miyuki suddenly suffering physically?