15 books in series

魔法科高校の劣等生 [Mahouka Koukou no Rettousei]

魔法科高校の劣等生 [Mahouka Koukou no Rettousei] is a 15-book series with 15 primary works first released in 2011 with contributions by Tsutomu Satou and Tsutomu Sato.

The Irregular at Magic High School, Vol. 1: Enrollment Arc
The Irregular at Magic High School, Vol. 2: Enrollment Arc, Part II
The Irregular at Magic High School, Vol. 3 (light novel): Nine School Competition Arc, Part I
The Irregular at Magic High School, Vol. 4 (light novel): Nine School Competition Arc, Part II
The Irregular at Magic High School, Vol. 5 (light novel): Summer Vacation Arc +1
The Irregular at Magic High School, Vol. 6 (light novel): Yokohama Disturbance Arc, Part I
The Irregular at Magic High School, Vol. 7 (light novel): Yokohama Disturbance Arc, Part II
The Irregular at Magic High School, Vol. 8 (light novel): Reminiscence Arc
The Irregular at Magic High School, Vol. 9 (light novel): Visitor Arc, Part I
The Irregular at Magic High School, Vol. 10 (light novel): Visitor Arc, Part II
The Irregular at Magic High School, Vol. 11 (light novel): Visitor Arc, Part III
The Irregular at Magic High School, Vol. 12 (light novel): Double Seven Arc
The Irregular at Magic High School, Vol. 13 (light novel): Steeplechase Arc
Cover 8

The Irregular at Magic High School, Vol. 14

The Irregular at Magic High School, Vol. 15 (light novel): Ancient City Insurrection Arc, Part II