[ Animation XXX Manga ] Izumo Episode 3

As the name suggests, my name is Touma Hikaru. I'll be attending Izumo Gakuen High School alongside Miyuki, my young sister-in-law, Nanami-chan, my childhood buddy, and Nagisa, whom I see as a competition. Strangely, I started to dream of a gorgeous shrine woman prostrating herself before something in a lake. Who is this woman? I believe I've seen her before...? In my dreams, I also glimpse a peculiar chamber in Izumo Gakuen. Uneasy, I slip inside the room, not realising that this is the beginning of a long trip.