It's the night before the Mai High Festival.  Keima and Chihiro are alone on the roof of the school.  Chihiro seems confused by Keima's behavior, but he continues with his conquest.  But as Keima makes his move, Chihiro says something unexpected.
The festival was around before our school.
El festival empezó antes que la escuela.
El festival empezó antes que la academia.
O festival existe desde 
antes da nossa escola.