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??
In the real world, it's pretty hard to
find out where someone lives.
En el mundo real, es muy difícil 
descubrir dónde vive alguien.
En el mundo real es muy difícil 
descubrir dónde vive alguien.
No mundo real é bem difícil 
achar onde alguém mora.