In the story, the seasons have changed and it will soon be the second spring. Tatsuya and Miyuki have finished their first year at first magic high school and are on their spring break. The two go with their friends to a villa on the Ogasawara Island archipelago. After only a small moment of peace, they find a young girl named Kokoa. She has escaped an experimental lab at the Naval base and the group decides to save her and the others still beholden to the cruel cad experiments.