Hayate wants Nagi to attend school on a daily basis. One day, however, when returning from school, Nagi forgets a notebook, and as her butler, Hayate goes to the academy to get the notebook. However he arrives at night.... in an area that's supposed to be haunted!
You seem to be having an awful lot of fun.
Parece que lo están pasando bien.
Parece que vocês estão 
se divertindo bastante.