The reason the world seem so crule to us are feelings. People get depressed, sad, angry, mad or just insane. Some know why and just act like this for a short moment. Some do longer and let other people feel it. Amu is one of the people who gets to feel other peoples black emotions. She's getting abused by a lot of people, including her Foster family. She shields herself from everyone and everything. Her life is mostly field with drug, pain and dark feelings. For her there is nothing bright and shiny in sigh....nothing but the strange boy she meets at the park.