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.
I mean, you are older and also 
senior to me as a teacher.
Es que eres mayor que yo, y también 
eres mi senpai como profesora.
Bem, porque você é mais 
velha e experiente que eu.