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.
Why did you remove the barrier?
¿Por qué retiraste la barrera?
¿Por qué has retirado la barrera?
Por que você removeu a barreira?