It's the beginning of the new semester at Hakuou Academy. Hayate is eager to start the new school year, however Nagi has fallen ill and will not be going.
Yup! Exactly! Because it 
stimulates the pleasure center
¡Sí, eso es! ¡Porque 
estimulan el centro del placer
Isso! Exato! Pois os doces estimularam o prazer,