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.
You shouldn't just go around 
showing people that.
Du solltest nicht einfach
anderen gegenüber so angeben.
No deberías lucir tus 
habilidades con el resto.
No deberías presumir de tus habilidades.
La magie
doit être maniée avec tact !
Non dovresti andare in giro a dirlo a tutti!
Você não deveria sair mostrando
 suas coisas pros outros.