I can only remember bits and pieces of what was in the manga. The plot is like this: A girl's family is massacred and she is the sole survivor. She is tested on and finds that her arm suddenly changes into what looks like a monstrous glob of meat that kills those monsters. I'm sorry that this is all I remember but I remembered it was long and sad and such that I really want to read it again.
I can only remember bits and pieces of what was in the manga. The plot is like this:
A girl's family is massacred and she is the sole survivor. She is tested on and finds that her arm suddenly changes into what looks like a monstrous glob of meat that kills those monsters.
I'm sorry that this is all I remember but I remembered it was long and sad and such that I really want to read it again.