A girl who hosts a goddess will remember everything that happened during her conquest.  In other words, she will remember falling in love with Keima.  Armed with that information, Keima attempts to walk home from school with all five potential hosts and increase their affection level.
More support for my theory that all 
the goddesses are in this city.
Eso refuerza la teoría de que todas 
las diosas están en la ciudad.
Eso refuerza la teoría de que todas 
las diosas están en la ciudad.
Mais base para a minha teoria de que 
todas as deusas estão nesta cidade.