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.
I've gotta book it to another 
rehearsal right after this,
Después de esto, debo 
apresurarme a otro ensayo.
Después de esto debo ir 
corriendo a otro ensayo.
terei outro ensaio logo depois disso