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 to their villa on the Ogasawara Island archipelago. After only a small moment of peace a lone young woman named Kokoa appears before them. She has abandoned the Naval base and she tells Tatsuya her one wish.

The invitation has arrived. It's time for the New Year's Reception at the Yotsuba family residence. This year, Miyuki and other candidates will gather there to decide who will be the next leader of their powerful clan. If chosen as successor, she would never again have to see her brother live as an outcast. At the same time, such a position would surely entail a political marriage, leaving her mind in complete turmoil. To complicate matters, the current head of the family sows doubt with a shocking statement. When the new year arrives, their relationship may change forever...