This is a heartwarming picture book illustrated by Yasuko Kimura. The story begins with the protagonist losing something important, and depicts the process of realizing its importance. With beautiful illustrations, it teaches us the importance of things that we only realize once we have lost them. This book is filled with deep messages that will resonate with a wide range of generations, from children to adults. Through this picture book, you will be able to reaffirm the small joys and precious things in your daily life.