​Welcome to Izumo Gakuen High School, where Touma Hikaru embarks on a mysterious adventure. Alongside his sister-in-law Miyuki, childhood friend Nanami-chan, and rival Nagisa, strange dreams haunt Touma. A beautiful shrine maiden praying naked in a lake appears in his dreams, invoking a sense of familiarity. Intrigued and curious, Touma finds himself drawn to a peculiar room within the school, unknowingly setting off an extraordinary journey. Discover the secrets that lie within the room as Touma’s unsettling dreams begin to intertwine with reality. Brace yourself for a thrilling and captivating tale filled with surprising twists and turns at Izumo Gakuen High School.​