Mystery Girl

Shiro
This girl has been a mystery since she first appeared in the first episode.She says and does weird things, never answering the important who are you or what are doing her questions because apparently she isn't a prisoner so the question still remains why is she there in the first place if she isn't a prisoner?Also she seems to strangely know Ganta from the past but Ganta almost has little to no memory of encountering her in his entire life.But even if he doesn't remember her she remembers him and has become his little white shadow since his arrival.As his little shadow she ends up saving his butt whether he realizes it or not.This little girl is more than she appears and you gonna have to watch it to believe.