Mahōka Kōkō no Rettōsei: Yokohama Sōran-hen

The year is 2095. Magic has been tamed as another form of technology, and the practice of magic is now a rigorous discipline. Brother and sister Tatsuya and Miyuki Shiba are just about to start their first year at the renowned First Magic High School of Japan. But the school's ironclad rules mean that the brilliant Miyuki enters the prestigious Course 1, while her older brother, Tatsuya, is relegated to Course 2--and that's just the beginning of their troubles! (Source: Yen Press)

The summer break is over and a new term begins, with it the time to decide on the new Student Council President. Adaptation of the final chapter of Light Novel 5, which was skipped in S1 of the anime.

"Three years ago, he had the same posture. Three years ago, he had stood behind Miyuki. Yes.... Compared to three years ago, it had changed." Set 3 years prior to the present time, Tsuioku Hen tells the events that would change Miyuki's world drastically, as well as the events that led Tatsuya to become what he is now.