So... is Kore wa Zombie desu ka? finished or not?
NO, it is not finished.
Why?
The anime finished before the manga:
Anime finished: October 20, 2012
Manga finished: June 20, 2015
MangaUpdates contains information about the anime adaptation and indicates that it is incomplete.
Watching Order (by release date)
Here you have all the anime relations we detected ordered by release date, so you can see the reason for this status in context and also use it as watching order.
The mangas and the non-core contents are excluded by default, but you can enable them by clicking the buttons below:
Kore wa Zombie desu ka?
Is This a Zombie?
Anime - Base
Release date: January 11, 2011
Kore wa Zombie desu ka? OVA
Is This a Zombie? OVA
Anime - Sequel
Release date: June 10, 2011
Kore wa Zombie desu ka? of the Dead
Is This a Zombie? of the Dead
Anime - Sequel
Release date: April 05, 2012
Kore wa Zombie desu ka? of the Dead: Hai, Minotake ni Attemasu
Is This a Zombie? Of the Dead OVA
Anime - Sequel
Release date: October 20, 2012
Synopsis
Kore wa Zombie Desu ka? tells the story of Ayumu, a regular high school student whose life takes a bizarre turn when he's killed and then resurrected as a zombie by a mysterious necromancer.
Forced to accept his new immortal existence, Ayumu begins a quest to find the person responsible for his death. During his search, he encounters a magical girl who wields a chainsaw and is suddenly burdened with her magical abilities.
Now, Ayumu must juggle his undead status, his desire for revenge, and his newfound responsibility of battling monsters called "Megalo" as the new magical girl, all while navigating the chaos of his increasingly unusual everyday life.