Kamisama no Inai Nichiyôbi

God abandoned the world on Sunday. As a result, nobody in the world can die or reproduce. A little girl, Ai, is the gravekeeper for a village. She has prepared 47 graves for the eventual deaths of every member of the village. Later, a man who identifies himself as "Hampnie Hambart, the 'Man-eating Toy'," which is coincidentally the name that Ai's mother left behind as the name of her father, arrives in the village and slaughters everybody. Just what is going on? (myanimelist.net)