10 titles recommended if you like The Irregular at Magic High School
The Iceblade Sorcerer Shall Rule the World
CLASSROOM FOR HEROES
The Misfit of Demon King Academy
Wise Man's Grandchild
The Demon Sword Master of Excalibur Academy
The Dawn of the Witch
Chivalry of a Failed Knight
Magical Warfare
The Strongest Sage with the Weakest Crest
A Returner's Magic Should Be Special