Irregular at Magic High School, Vol. 2 (light novel): Enrollment Arc, Part II, Part II, Enrollment Arc

"Tatsuya and Miyuki Shiba are brother and sister, but they share a bond that transcends mere blood relation. Despite the fact that they're siblings who attend the same school, their lot in life couldn't be more different. Miyuki's a Bloom, one of the elite students of Magic High, while Tatsuya's a Weed, with low expectations and even lower levels of respect. But having skillfully diffused a tense situation, Tatsuya finds himself recruited by the school's disciplinary committee and soon discovers there's more to Magic High than he realized.."--
Although Tatsuya and Miyuki Shiba are brother and sister, Miyuki is an elite student and Tatsuya is a student with low expectations, but after diffusing a tense situation, Tatsuya get respect when he is recruited by the school's disciplinary committee.
(Volume 1)It's been a century since magic stopped being the stuff of fairy tales and became a practical technology. Siblings Tatsuya and Miyuki Shiba have both been admitted to a prestigious magical prep school--and while Miyuki's excellent entrance-exam scores qualify her to be part of Course 1 (a "Bloom"), Tatsuya's poor performance relegates him to Course 2 (a "Weed"). Tatsuya's going to need every bit of clever thinking he can come up with in order to keep both himself and his sister safe in a place where the students are learning to manipulate reality itself!