Blood-C

is a horror anime co-produced by studio Production I.G and mangaka group CLAMP. It is the second anime series in the Blood franchise following the 2005–2006 series Blood+. The original 12-episode series aired during 2011, with a movie Blood-C: The Last Dark releasing in Japanese theaters the following year. The anime was subsequently adapted into two manga, a 2011 novelization, a 2015 stage play set between the events of Blood-C and The Last Dark, and a live-action prequel set for release in 2017.

A series of short specials called Blood-C: None-None Gekijou aired on the official website prior to the movie release. An additional episode was aired at the Clamp Festival 2012. It was later included in Blood-C: The Last Dark Limited Edition BD and DVD

Plot
Saya Kisaragi is a normal girl who is overly clumsy and kind. She lives with her father, the head of a shrine, and learns the 'art of the sword' from him. When she is faced with various forms of 'trials' that test her kindness, it brings misfortune for being 'overly-kind'. Against misfortune and for the sake of her friends, she maintains her kind heart and becomes stronger. However, in her journey, how will she fare, why is she being tested?

Official

 * Official Anime Site (Japanese)
 * Blood-C: The Last Dark's Official website
 * Production I.G website

Other Sources

 * Wikipedia
 * Anime News Network (Anime)
 * Anime News Network (Manga)