[Machine Translation] For Keiichi Maehara, a transfer student from Hinamizawa Village, his club mate, Enon Sonozaki, was like a good male friend. However, with the arrival of his twin sister, Shion, he learns that Shion is also a girl. Then came the "Cotton Floating" festival. She is invited to the forbidden "Ritual Hall" with a light heart, but it turns out to be a big mistake. The secret history of Hinamizawa Village and the brutal truth of the Cotton Flushing. The world around Keiichi changes drastically after this night when he discovers the other side of the village... From upper elementary school and junior high school.