Kami nomi zo Shiru Sekai: Flag 0
English title: The World God Only Knows: Flag 0
Japanese title: 神のみぞ知るセカイ: Flag 0
Type: OVA
Episodes: 1
Source: Manga
Genres: Comedy, Supernatural
Studios: Manglobe
Duration: 1 min
Rating: PG-13 - Teens 13 or older

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.