For @TheDarkenIllusions's contest
#1 The girl in the picture is Inori from the anime Guilty Crown. She'll offer a song to those who died for the war and for the victims of war.
#2 Basically, what the subtitle meant was that there are billions of souls in the world. Some are hiding the darkness within their souls beneath their innocent visage but the girl's soul is as kind and as human as how she looks outside.