A Sinner Has No Right of Choice.
The door to Floor B3 opens to reveal a space like a prison cell, enclosed by pure white walls and iron bars. The moment Zack strikes the locked door before them with his scythe, the duo are barraged by machine gun fire.
Aired 27/07/2018EP 4 - A Sinner Has No Right of Choice.

Angels of Death
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…