Synopsis
My name is Toma Hikaru. I attend Izumo Gakuen High School alongside Miyuki, my little sister-in-law, Nanami-chan, my childhood friend, and Nagisa, who sees me as a rival. I’ve started having a strange dream about a beautiful shrine maiden praying naked in a lake. I wonder who she is—I feel like I know her... I also see a strange room at Izumo Gakuen in my dream. Feeling uneasy, I decide to sneak into that room, unaware that it marks the beginning of a long journey.