The Irregular at Magic High School (2014)

During the third World War – caused by a lack of food due to the deep freeze in the 2030’s – the population plunged down to three billion. What prevented this war from turning into a thermonuclear war, was the international collaboration between magic technicians. And now, during the late 21st century, all countries compete to raise magicians. The siblings Tatsuya and his little sister Miyuki Shiba both are magicians, who got accepted to First High School – a state-run school dedicated to teaching magic technicians. Due to the strict separation into two distinct groups according to their magical performances, Tatsuya was assigend to the so-called Weeds – the group with less advaned magical skills – and therefore separated from Miyuki, who was assessed to be a Bloom. Ever since brother and sister have entered through the gates of this prestigious school, the former calm campus has been subject to a rapid change …

Source: www.anisearch.com/anime/9057