Demon Sword Master of Excalibur Academy, Vol. 5 (light novel)

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