A young student begins experiencing vivid dreams of a mysterious shrine maiden praying beside a moonlit lake, alongside visions of a hidden chamber within Izumo Gakuen. Accompanied by his sister-in-law, childhood friend, and a spirited rival, he attends the academy while growing increasingly unsettled by these recurring images. Unable to ignore his curiosity, he resolves to slip into the forbidden room after hours. What he discovers there marks the quiet start of an unforeseen path.
