Six-year-old Hotaru gets lost in a mountain forest near her grandfather's home and is guided out by Gin, a masked spirit who warns her never to touch him, because contact with a human will make him vanish forever. Hotaru returns to the forest every summer, and their bond deepens across the years even as the rule between them never changes. This deluxe edition gathers the original one-shot with three companion stories, including a newly drawn special chapter set in Gin and Hotaru's world.