The legendary fox : Conflict between love and tears

The story is about a fox generation human girl. On the end of her 16th birthday, on a tragedies she fell into the lake, "lake of tears ". She drowning into the water and travel over 400 years ago . In that timeline, there were war between Humans and Nine tail demon foxes. There she falls in love with a rude and cruel warrior Leo ..... what happened to her?? What are the consequences she faced ?? If she returns to her timeline ?? How did the war end? What makes her to travel? Why she was human?