Reaper (2013)

Death has always been her enemy. After the death of their parents, she was left with only her sister as family. However, she is young and has a weak body. Her sister, though previously very healthy, somehow got something worse than her. She couldn't understand what the doctors said, but she understood that she must do everything she can to help her sister. When Death comes to claim the only one she has left, she wasn't just going to sit quietly and let it happen.