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.
How about seeing if you can properly master 
that "turning people naked" magic of yours?
Wie wäre es, wenn du deinen
Nacktmachzauber meistern würdest?
¿Qué tal si intentas 
dominar tu magia que desnuda
¿Qué tal si intentas dominar tu magia
Et si tu apprenais à perfectionner
ton sort de strip-tease ?
Che ne dici di testare la tua magia "denuda le persone"?
Que tal se você puder dominar completamente