"The Irregular at Magic High School" is a Japanese light novel series written by Tsutomu Satou. It is set in a world where magic is a recognized technology, and students are trained at prestigious institutions. The story follows siblings Tatsuya Shiba and Miyuki Shiba as they enroll in the elite First High School, where they face challenges related to their differing magical abilities. Tatsuya is placed in the lower-ranked Course 2 due to his lack of conventional magical skills, while Miyuki excels in Course 1. The series explores themes of discrimination, family bonds, and the complexities of magic, as Tatsuya navigates his unique talents and protects his sister from various threats.