Nagi gives Hayate time off to study and Hayates buttler duties are taken over by a robot called Thirteen.
Yes, and I owe it to Sakuya for 
really drumming it into me.
Sí, se lo debo a Sakuya-san 
por ayudarme a estudiar.
Sim, devo isso a Sakuya-san
que esteve me ensinando.