Kami-sama no Inai Nichiyoubi

Kami-sama no Inai Nichiyōbi (神さまのいない日曜日, lit. "Sunday Without God"), also known as Kaminai (神ない) or Kaminichi (神日) for short, is a Japanese light novel series written by Kimihito Irie, with illustrations by Shino. Fujimi Shobo has published seven volumes since January 2010. A manga adaptation by Abara Heiki began serialization in the November 2010 issue of Fujimi Shobo's Monthly Dragon Age. A drama CD was released by Marine Entertainment on December 29, 2010. An anime TV series adaptation produced by Madhouse and directed by Yūji Kumazawa, began airing on July 6, 2013. It has total of 12 episodes.

Plot
Ai is a 12-year old girl who inherited her departed mother's job of “Grave Keeper,” whose work is to grant peace to the dead who cannot die. She lived a quiet life with her kind adoptive parents and the other villagers, but one day, a young boy calling himself “Hampnie Hambert”, a man-eating toy, appeared in the village with a gun in his hands, forcing Ai to witness how cruel reality can be…

Official

 * Anime Official Site

Other Sources

 * Kamisama no Inai Nichiyoubi on AnimeNewsNetwork
 * Kamisama no Inai Nichiyoubi on Wikipedia