Because this book lets us know how happy it is to be alive. This book is about a 15-year-old Aya Muto, who is about to start the most exciting high school lives, but a fatal rare terminal disease, that is spinal cerebellar atrophy, has changed her life. This book not only lets us know precious life is, but also lets us know that this girl and spinal cerebellum atrophy, and the spirit of hard work, there are about 141 cells in the human brain that support nerve cells. There are ten times as many cells, and each cell belongs to a different tissue. In other words, human life is completely dependent on the nerve cells of various tissues to maintain activity. The so-called spinal cerebellar atrophy refers to the nerve cells in these tissues reflexively entering the body, forming obstacles that cause changes in the cerebellum, brain stem, and spinal cord, which are responsible for speed and balance movement, and eventually disappear completely. Ordinary people can easily talk, sing, walk, run, and even write. These ordinary things are also difficult for Ya who suffers from this disease, but the doctor and Ya Ye ’s mother did not give up Ya Ye. , Knowing that the condition will continue to worsen, but Ya also refused to compromise the diseased person with a strong willpower to recover every day, and practice pronunciation and walking. Ya also worked hard to write a diary every day to record his illness. Although it was very hard, but not only did he not give up himself, he also worked hard every day. Although he still couldn't resist the illness and passed away, he ended 25 years of short life. In his life, Ya has been unable to write. The total number of diaries has reached 46. For the first time, the book was assembled by FA Press in 1986, which has given tens of thousands of readers with great encouragement and hope to fight the disease.