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.
We're supposed to find residents of 
Heaven who are hiding on Earth.
Debemos buscar habitantes del cielo
Debemos buscar habitantes del cielo
Precisamos achar residentes do Céu
 que vieram para a Terra.