神のみぞ知るセカイ: Flag 0
The World God Only Knows: Flag 0
OVA PG-13 HD Sub 1 Dub 1
Short prologue OVA, bundled with manga volume vol.10. Elsie receives from Dokurou Skull, hell's branch chief of "counter measures", the task to go on earth and capture evil spirits that have escaped from hell.