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.
then serve them wholeheartedly!
!ثمّ نخدمهم بإخلاص
und ihnen von Herzen dienen!
et les servir avec dévotion !
e poi li serviremo con tutto il cuore!
para, então, servi-lo de todo o coração!