Kitou Aya is a young highschooler who finds out that she has Spinocerebellar Atrophy. This disease causes the person to lose control over his or her body. Because the person retains all of her mental ability, this disease is like a prison. Through her struggles, Aya finds words to inspire herself to become strong and cope with the disease and has subsequently inspired millions of readers to overcome their own strife. This is her story.