The Demon Sword Master of Excalibur Academy Novel Volume 5 was written by Yu Shimizu with illustrations by Asagi Tosaka.

In the aftermath of the disastrous Holy Light Festival, the ostensibly defeated Dragon Lord Veira appears before Dark Lord Leonis and demands he take her on a tour of the city! Riselia follows after the two in secret, only to find them engaged in a poolside competition. However, the eighteenth platoon's carefree escapades come to an abrupt end when they’re sent on a mission to Necrozoa. There they discover Zemein, one of Leonis’s old servants, plotting to revive the Undead Dark Lord!