The official Twitter for the Satsuriku no Tenshi franchise has announced that the game will receive a TV anime. More information will be revealed at a later time via official Twitter.

Synopsis
13-year-old Rachel awakens to find herself trapped in the basement of an abandoned building. Without any memories, or even a clue as to where she could be, she wanders the building, lost and dizzy. In her search, she comes across a man covered in bandages. He introduces himself as Zack, and he wields a grim-reaper like sickle.

A strange bond is struck between them, strengthened by strange, crazy promises…

These two, trapped in this strange building, don't know why fate has placed them there. But they will work together desperately to find a way out… (Source: MU, Edited)

Satsuriku no Tenshi is a psychological horror adventure game that was first released on the Den Faminico Game Magazine website in September 2015. The game was released in English under the title Angels of Death via the Steam platform in December 2016. It is also available in Traditional Chinese and Korean. The manga adaptation, which is drawn by Kudan Nazuka and based on Makoto Sanada iteration of the series, has been serialized in Comic Gene magazine since October 2015. There is also a prequel, titled Episode 0, made by the same mangaka duo as well as the 4-koma manga Satsuten!, which is drawn by negiyan via pixiv Manga. Both the fifth compiled volume of Satsuriku no Tenshi and first compiled volume of Satsuriku no Tenshi Episode 0 will be released on July 27, 2017.

Official site: https://gamemaga.denfaminicogamer.jp/satsuriku/
Official Twitter: @strk_tenshi

Source: Nijimen

Satsuriku no Tenshi on MAL