The Demon Lord's companion, Sylphy, reappears in the modern world after several thousand years. A masked man tells Sylphy where she can find the Demon Lord and she... 

Meanwhile, the Magic Academy is preparing for its school festival, and Ard is asked to perform in a play in lieu of their Sword King Battle Tournament while also dealing with a threat to cancel the festival. Ard and the others start discussing the play when they're interrupted by a huge commotion at the school.
It's their fault!
!هذه غلطتهم
¡Es culpa suya!
¡Es culpa suya!
C’est leur faute !
È colpa loro!
A culpa é deles!
Это они всё виноваты!