The series is currently airing. The new PV is here. This visual and PV is a preview of the upcoming “Steeple Chase Arc” that starts next week on May 3rd. Check out the ANN article for more information. Synopsis of the first season from AniList:

Magic is a product of neither legends nor fairy tales, but instead has become a technology of reality since a time unknown to people. Supernatural power became a technology systematized through magic, while magic became a technical skill. A “Supernatural Power User” became a “Magic Technician.” Magic Technicians (in short, Magicians) are nurtured through Magic High Schools and Universities.

This is a story about:

Tatsuya, a defective elder brother low achiever. Miyuki, a perfect, flawless younger sister high achiever. After both siblings entered a Magic High School, The stage of daily turbulence was unveiled—.