A new student arrives from Russia on exchange, immediately confessing her feelings towards Moroha. Moroha is accommodating, but Shizuno has suspicions.
How could you mess with Nii-sama 
without my permission?
Was wagst du, dich ohne Erlaubnis
 an Nii-sama ranzumachen?!
¿Cómo puedes meterte con 
mi hermano sin mi permiso?
¿Cómo puedes relacionarte con 
mi hermano sin mi permiso?
Comment as-tu osé
Come ti sei permessa di mettere le mani
 su nii-sama senza il mio permesso?
Você deu em cima do 
meu irmão sem me pedir!