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.

The school festival is here and Ard is busy patrolling with Ireena. However, Ard is left cradling his head after Olivia acted on her own to enter him into the Sword King Battle Tournament and Ginny forces him to be waited on at their class's Erotic Maid Cafe. Meanwhile, Ireena, Ginny, and Sylphy also decide to enter the Sword King Battle Tournament. In Sylphy's case, it's due to her strong attachment to the tournament's grand prize.

The play serving as a main event for the festival is starting up. Ard is playing the role of the Demon Lord while Sylphy performs as the Evil God, making Ard suddenly recall his battle against said god. At the time, Sylphy was struggling with a sense of inferiority and the feeling that Lydia didn't need her. Yet when Varvatos reveals Lydia's true feelings and gives Sylphy permission to fight freely, Sylphy pulls off something incredulous...