User blog comment:Kodachi-sama/HINT in the Ruby Trailer??/@comment-5607322-20130304030815/@comment-7453654-20130510181523

I agree with the comment above and it could be that she steals the spirit/soul of their body and storing them in the bullets plus she looks like a Grim Reaper too and a grim reaper usually are "death" related so yea... :)