It is a bit ambiguous in this case.
The anime finished after the manga:
Anime finished: December 10, 2015
Manga finished: June 30, 2014
... But we could not confirm the source content in MangaUpdates.
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:
Anime - Base
Release date: September 16, 2013
Anime - Sequel
Release date: September 24, 2015
Yui Komori is sent to live in a mysterious mansion with the six Sakamaki brothers, who are revealed to be vampires.
Unbeknownst to her, she has been sent there as a "sacrificial bride," and the brothers begin toying with her, each in their own sadistic way.
Yui struggles to understand why she was sent there and what her purpose is, all while dealing with the increasingly dangerous and disturbing advances of the Sakamaki brothers.
Her life is turned upside down as she finds herself trapped in a nightmare, caught in a web of dark desires and vampire games.