(WARNING: This book contains subjects that may be sensitive to some readers. The main character is a victim of domestic violence, and has experienced suicidal thoughts. These are not often stated, but please, if these are sensitive subjects, we highly advise that you do not read this book. If you are experiencing these things, don't hesitate to tell someone--even us. Thank you.) Miku Hatsune had lived 15 years with her parents--one of them abusing her. She always tried to stay positive, though. And that wasn't too hard with her best friend Luka Mergurine around. But when she reached her 16th year, that all changed when she was diagnosed with amnesia. Causing her to completely forget about Luka.