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??
Every girl in the world will
be after my brother!
e você verá que todas as meninas do 
mundo cairão aos pés do meu irmão!