Nagi dresses Hayate in a girl's sailor uniform, but things continue as it goes on to the point where Hayate looks like a cat girl!
I think you should do something 
about the demon at your back first.
Creo que primero deberías hacer algo 
con el demonio que tienes detrás.
Eu acho que você precisa enfrentar 
a fera atrás de você primeiro.