As summer vacation ends, two young girls visit a mountain clearing to watch the evening fireworks. As night falls and the fireworks end, their hometown becomes enveloped in darkness. On their journey home, something lunges from the shadows to attack, and the two girls find themselves lost in the dark. Separated and afraid, the girls must brace themselves for the terrors of the night, and face the darkness to find each other and make their way home.
Haru's best friend. She has a bright personality and owns two puppies. The girls were separated on the way home from the fireworks show, and she now wanders the town at night.
Yui's best friend. She's a quiet and shy girl, but gathers up her courage to search for Yui in the lonely darkness of the town.