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A young girl, a second-year student, is suddenly transported back in time. She thinks it's a strange, terrible dream, but in the midst of the events, those around her convince her that she is actually a prophetic princess who has seen the future through the eyes of her student ancestor in a delusion. In her new incarnation, the girl will have to lead her people in a fierce battle against fierce nomads and dragon snakes that look very similar to prehistoric dinosaurs. Going into the dimension of timelessness, the main character predetermines the victory of people over the dark forces, and also meets her love.