Synopsis
A series of phantom assaults occurred in a certain town. Because the incidents were extraordinary, rumors spread that a ghost or supernatural entity was responsible. The students at the school Akitoshi attended were terrified. One day, an unfamiliar girl appeared at the school. However, every student except Akitoshi believed they already knew her. Sensing something odd, he followed her to investigate but lost sight of her. At that moment, he heard a woman's scream from a nearby material yard and rushed to the source. There he found Mikage, the beautiful girl from school, surrounded by monsters called Yuragi (fluctuation) and suspended naked. The Yuragi noticed Akitoshi and began attacking him. Then the fighter Ai appeared and cut them down. Akitoshi stared at Ai. What was their true nature—enemy or ally?
