Mahouka Koukou no Rettousei: Douran no Joshou-hen

March 2097. Brazil deploys the strategic-class spell Synchroliner Fusion in South America, starting a wave of unrest that will reach as far as Japan, where the new school year is just beginning. Tatsuya and Miyuki have entered their third year at First High, but anti-magician sentiment has been steadily rising. As many young scions of the twenty-eight families gather to discuss what to do about the concerning political climate, a much more immediate threat sits just beyond the shores of Sado Island.

Adaptation of Light Novel 21-22.

https://www.cmoa.jp/title/274882/