Mahouka Koukou no Rettousei Movie: Hoshi wo Yobu Shoujo S01

In the story, the season changes and the second spring is approaching. Tatsuya and Miyuki have completed their first year of high school and are on spring break. They both return to their villa on Ogasawara Island. After a few moments of peace, a lone young woman named Kokoa appears before them. She makes a request to Tatsuya.