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 ones that are inside wouldn't 
have noticed the opening.
Los que estaban adentro 
no notarían la abertura.
Los que estaban dentro 
no notarían la abertura.
Aqueles lá dentro não teriam
 notado a abertura.