Keima and Elsie have successfully conquered Ayumi and captured the loose soul.  ──But they haven't completed their contract yet...!!
Elsie transfers into Keima's class, declares that she's his little sister, and announces that she's going to live in his house as well!
All for the sake of rounding up the loose souls in this city...  Who holds the next loose spirit?  And will Elsie be able to become Keima's little sister??
A loose soul that can hide
inside a person's heart...
Un alma perdida que puede esconderse en el 
espacio vacío del corazón de una persona...
Un alma perdida que puede esconderse en el 
recoveco del corazón de una persona...
Uma alma caída pode se esconder 
dentro do coração de uma pessoa...