The Irregular at Magic High School, Vol. 5 (light novel)

After being thrown head first into the Monolith Code matches, Tatsuya cleverly perseveres while Miyuki concludes an immaculately beautiful Mirage Bat performance. The Shiba siblings have brought First High to the brink of all out victory in the Nine School Competition but then the criminal organization, No Head Dragon, ramps up their disruptions and provokes the wrath of Tatsuya. After putting his beloved sister in harm's way, Tatsuya explodes with the rage and power of an angry demon god.