This year, the fireflies flew around most actively, creating a fantastic sight. Himebotaru, which is an indigenous firefly species of Japan, fly around the summer forest while repeating a blink of a short time—reminiscent of Christmas illumination. The females cannot fly, only the males. The sight is fantastic enough to forget the awe of the night forest. It is the brightness of life for only ten days of the summer. Forests are living things. And many flora and fauna coexist in the forest. The life time of each creature is not the same, it may be one year or decades, the time of each life will flow, and the life will be repeated. They are a precious existence that people should not threaten. I just hope that this forest and its fireflies will be protected.