It's summer. The gang's on a southern island, and there's cute girls in swimsuits abound. Arata's cooking yakisoba for some reason, but these things happen. The quartermaster is repairing the school that Arata destroyed in his collapse phenomenon. The girls enjoy a mixed-gender bath, and the demon lord candidate decides on a theme--control.
So Arata become a mage to 
save his cousin, Hijiri-san,
Arata ist also Magier geworden,
um seine Cousine Hijiri-san zu retten,
Arata se hizo mago para 
salvar a su prima, Hijiri,
Arata se hizo mago para 
salvar a su prima, Hijiri,
Et c’est pour ça
E così, Arata è diventato un mago
 per salvare sua cugina,
Então o Arata se tornou um mago 
para salvar a sua prima, Hijiri-san,