While Sanemi was returning from a mission, walking through a winter snow-covered forest, he noticed drops of blood on the snow that stretched further and further Sanemi thinking that it was a demon with a victim, rushed to the side where the drops of blood were supposed to end, but they were getting more and more, suddenly he noticed a small body of a girl who was lying unconscious in the snow and she dressed very easily, she had a huge and deep wound on her side - the blood he saw was that of