After a fight Hayate, Nagi heads to the apartment complex to hang out.  But her “little sister” is the only one home.  This might be Nagi’s chance to find out what Ruri’s real goal is. 
Don't you think we should 
close the storm windows?
¿No crees que debemos cerrar 
las ventanas para lluvia?
¡¿No crees que deberíamos cerrar mejor las ventanas?!
Não seria melhor 
fecharmos as janelas?