The Sword Mastery Academy (修剣(しゅうけん)学院, Shūken Gakuin?), officially known as the North Centoria Imperial Sword Mastery Academy, is Norlangarth North Empire's most prominent swordsmanship academy, located in North Centoria in Underworld. The 3 other empires of the Human Empire likely have their own equivalents of the Sword Mastery Academy located in East, West, and South Centorias. About 20% of the students in the Academy come from a commoner background, while the rest are nobles. Since the Academy is run by the empire, the students do not have to pay any school fees.